Download 17. steering
Transcript
Steering Steering . . . . . . . . . .1. .7.- 2 S p e c i aTl o o l s . .7. .-.3. . . . . . . . . C o m o o n e nLto c a t i oInn d e x . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 17-4 PlayCheck.....................". WheelRotational Steering 17-4 .......... PowerAssistCheck.................. 17-5 ................. andGearboxInspection SteeringLinkage ........... l e m o v a.l . . . . . . . . . . . . . . . . . . . . . . . . , . . . .1. .7. -. 6 S t e e r i nW g h e eR 17-7 ................ WheelDisassembly/Reassembly Steering 17-8 ............... WheelInstallation Steering 17-9 Steering ColumnRemovalandInstallation...........'... 17-11 .............. ColumnInspection Steering 17-'12 .......................................'. Replacement SteeringLock . . . . . " . . . . . . . . '1. .7' .- .1 3 R a c kG u i d eA d i u s t m e n t ElectricalPowerSteering(EPS) 17-15 Steering ( SpecialTools Ref.No. o Tool Number 07MAA-S100200 Description LocknulWrench.43 mm E -.tt)- ---<,/ L\2 r 6Y .Vo I 1 7-2 Oty ComponentLocationIndex DRIVER'S AIRBAG ASSEMBLY Removal/lnstallation, p a g e2 3 - 1 1 3 STEERINGWHEEL Removal,page 17-6 Disassembly/Reassembly, page 17-7 Installation,page 17-8 STEERING COLUMN SteeringColumnRemovaland Installation, p a g e1 7 ' 9 SteeringColumn Inspection, p a g e1 7 - 1 ' l SteeringLockReplacement, page 11-12 STEERING GEARBOX page'17-13 RackGuideAdjustment, 17-3 Steering SteeringWheelRotationalPlay Check PowerAssistCheck 1 . Startthe engine,and let it idle. 1. Turn the front wheelsto the straightaheadposition. 2. Measurehow far you can turn the steeringwheel left and right without moving the front wheels. Attach a commerciallyavailablespring scaleto the s t e e r i n gw h e e l .W i t h t h e e n g i n ei d l i n ga n d t h e v e h i c l eo n a c l e a n ,d r y f l o o r ,p u l lt h e s c a l ea s shown, and read it as soon as the tires begin to turn. . lf the play is within the limit, the gearboxand l i n k a g ea r e O K . . lfthe playexceedsthe l i m i t ,a d j u s t t h er a c kg u i d e '17-13). lf the play is still excessiveafter {seepage rackguide adjustment,inspectthe steering l i n k a g ea n d g e a r b o x{ s e ep a g e1 7 - 5 ) . BOTATIONAL PLAY:0 10mm (0-0.39in.l + : 3 . l f t h e s c a l er e a d sn o m o r e t h a n2 9 N ( 3 . 0k g f , 6 . 6l b f ) , the power assistis OK. lf it readsmore, checkthese items: . . . . 17-4 Fronttire pressure Steeringlinkage(seepage 17-5) Rackgulde adjustment(seepage 17-13) EPSsystem (seepage 17-18) \ SteeringLinkageand GearboxInspection BOOT Inspect Ior damageanddeterioration. Checkfor looseness, a n db i n d i n g . 12 mm BOLTS Inspectfor looseness. I STEERING COLUMN Inspect for loosecolumn mountinghardware STEERING JOINTS Checkfor looseioint bolts, andlooseor bindingioints. TIE.RODLOCKNUTS Checkfor looseness. STEERING GEARBOX Inspectfor loosemounting hardware. GEARBOXMOUNTING CUSHIONS Inspectfor deterioration. TIE.RODENOBALLJOINT lnsoect tor looseness, b i n d i n ga,n dd a m a g e . BALLJOINT BOOT Inspect for damageanddeterioration. 17-5 Steering SteeringWheelRemoval SRScomponentsare locatedin this area.Reviewthe SRScomponentlocations(seepage 23-13),and precautionsand procedures(seepage 23-14)in the SRS sectionbeforeperformingrepairsor service. 1. Align the front wheels straightahead,then remove the driver'sairbagfrom the steeringwheel (see p a g e2 3 - 1 1 3 ) . 2. Disconnectthe cruisecontrol sevresumeswitch connector(A),and loosenthe steeringwheel nut {B). { 3. Installa commerciallyavailablesteeringwheel puller {A) on the steeringwheel (B).Freethe steeringwheel from the steeringcolumn shaft by t u r n i n gt h e p r e s s u r eb o l t( C )o f t h e p u l l e r . Note these items when removing the steering wheel: . Do not tap on the steeringwheel orthesteering column shaft when removingthe steeringwheel. . l f y o u t h r e a dt h e p u l l e rb o l t s( D )i n t o t h e w h e e l hub more than 5 threads,the bolts will hit the cable reel and damageit. To preventthis, install a p a i ro f j a m n u t s5 t h r e a d su p o n e a c hp u l l e rb o l t . D i Bemovethe steeringwheel puller,then removethe steeringwheel nut and steeringwheel from the sleerinocolumn. 17-6 SteeringWheelDisassembly/Reassembly WHEEL STEERING ACCESSPANELA CONTACTPLATE 75*-=offi CONNECTORHOLDERS ffi)Y MOOULESETBRACKET -f STEERING WHEELREABCOVER b / ,/* accEss PANEL B CRUISECONTROLSWITCH 17-7 Steering SteeringWheelInstallation 1 . B e f o r ei n s t a l l i n g t h e s t e e r i n gw h e e l ,m a k es u r et h e front wheels are alignedstraightahead,then center the cable reel (A).Do this by first rotatingthe cable reel clockwiseuntil it stops.Then rotate it counterclockwiseabout two and a half turns.The a r r o w m a r k( B )o n t h e c a b l er e e ll a b e ls h o u l dp o i n t straightup. 3. Installthe steeringwheel nut (A),and tighten it to the specifiedtorgue. A 39 N.m(4.0kgf m.29lbt ftl _ B lr,',,t ;. _,:! '' '1i::..'.'l Connectthe cruisecontrol set/resumeswitch connector(B).fvlakesure the wire harnessis routed and fastenedproperly. Positionthe two tabs (A) of the turn signal canceling s l e e v e( B )a s s h o w n .I n s t a l l t h es t e e r i n g wheel onto the steeringcolumn shaft, makingsure the steerlngwheel hub (C)engagesthe pins (D) of the cable reel and tabs of the cancelingsleeve.Do not tap on the steeringwheel or steeringcolumn shaft when installingthe steeringwheel. I n s t a ltlh e d r i v e r ' sa i r b a g a , n d c o n f i r mt h a tt h e system is operatingproperly{seepage 23-113). C h e c kt h e h o r n ,t u r n s i g n a lc a n c e l i n g a n dc r u i s e control switchesfor proper operation. 7 . Reconnectthe batteryand do the following: . D o t h e e n g i n ec o n t r o lm o d u l e( E C M )i d l e l e a r n p r o c e d u r e( s e ep a g e1 l - 1 3 9 ) , . Powerwindow control unit resettingprocedure \see page 22-1281. . Enterthe anti-theftcord for the radio,then enter the custmer'sradio stationpresets. . Set the clock. 17-8 { SteeringColumnRemovaland Installation SRScomponentsare locatedin this area.Reviewthe SRScomponentlocations(seepage 23-13)and precautionsand procedures(seepage 23-14)in the SRSsectionbefore performingrepairsor service. Removal 1, Recordthe radio stationpresets,and disconnectthe battery. 2 . R e m o v e t h e d r i v e r ' s a i r b a g a s s e m b l y ( s e e p a g e 2 3 -a1n1d3t)h e s t e e r i n gw h e e l( s e ep a g e1 7 - 6 ) . p a g e2 0 - 6 0 ) . 3 . R e m o v e t h ed r i v e r ' sd a s h b o a r dl o w e r c o v e r ( s e ep a g e2 0 - 5 9 a) n d u n d e r c o v e r ( s e e 4. Removethe column covers(A: T I x 1.25mm 16 N.m (1.6kgf.m, 12 lbl.fr) b 5 . Disconnectthe wire harnessconnectorsfrom the combinationswitch assembly{B). 6 . Removethe combinationswitch assemblyfrom the steeringcolumn shaft by removingthe screw (C)on the top of the combinationswitch. 7. Disconnectthe connectorsfrom the ignition switch,and releasethe wire harnessclips from the steeringcolumn. 8. Disconnectthe steeringjoint (D),and remove it from the column shaft. 9. Removethe steeringcolumn {E)by removingthe attachingnuts and bolts. \ (cont'd) 17-9 Steering SteeringColumnRemovaland Installation(cont'd) lnstallation 1 . I n s t a ltl h e s t e e r i n gc o l u m n ,a n d m a k es u r et h e wires are not caught or pinchedby any parts. Insertthe upper end ofthe steeringjoint onto the steeringshaft {A) (line up the bolt hole (B)with the flat portion (C)on the shaft). 8 x 1 , 2 5m m 28 N.m {2.9 kgf m, 21rbr.ft) A Slip the lower end of the steeringjoint onto the pinion shaft {D) (line up the bolt hole with the g r o o v e( E )a r o u n dt h e s h a f t )a, n d l o o s e l yl n s t a l l t h e lower joint bolt. Be sure that the lower joint bolt is securelyin the groove in the pinion shaft. 4 . Pull on the steeringjoint to make sure that the s t e e r i n gj o i n t i s f u l l y s e a t e dT. h e n i n s t a l l t h eu p p e r joint bolt, and tighten it to the specifiedtorque. Tightenthe lower joint bolt to the specifiedtorque. Finishthe installation,and note these items: . Make surethe wire harnessis routed and fastenedproperly. . Make sure the connectorsare properlyconnected. . R e i n s t a l l t h se t e e r i n gw h e e l( s e ep a g e1 7 - 8 ) . . Reconnectthe battery. - Do the power window control unitreset procedure{seepage 22-128). - Enterthe anti-theftcode for the radio,then enterthe custmer'sradio stationpresets. - Set the clock. . Verify horn, turn signalswitch,and cruisecontrol switch operation. . Checkwheel alignment,if necessary(seepage 18-4). . D o t h e e n g i n ec o n t r o lm o d u l e( E C M )i d l el e a r n p r o c e d ur e { s e ep a g e' 1 1 - 1 3 9 ) . 17-10 { SteeringColumnInspection . C h e c kt h e s t e e r i n gc o l u m nb a l l b e a r i n g ( A a ) n d t h e s t e e r i n g j o i n t b e a r i n g s ( B ) f o r p l a y a n d p r o p e r m o v e m el fnatn. y bearingis noisy or has excessiveplay, replacethe steeringcolumn as an assembly, ' C h e c k t h e a b s o r b i n g p l a t e s ( C ) , a b s o r b i n g p l a t e g u i d e s ( D ) , s t o p ( E ) , a n d c o a t i n g p l af o t er sd(i F s t)o r t i o na n d breakage.lf there is distortionor breakage,replacethe steeringcolumn as an assembly. 17-11 Steering SteeringLockReplacement NOTE:Do not try to re-keya replacementsteeringlock. lf necessary,re-keythe other locks. 1 . R e m o v et h e s t e e r i n gc o l u m n( s e ep a g e1 7 - 9 ) . 2. Centerpunch each ofthe two shear bolts (A),and drill their headsoff with a 5 mm (3i16 in.) drill bit. Be carefulnot to damagethe switch body when removingthe shear bolts, 7. Tightenthe shearbolts (A) untilthe hex heads(B) twist off. A I :..'-":' 3. Removethe shear bolts from the switch body. 4. Installtheswitch body without the key inserted. 5. Looselytighten the new shear bolts. 6. Insertthe ignition key,and checkfor proper operationof the steeringwheel lock and that the ignition key turns freely. 17-12 I RackGuideAdjustment Special Tool Required Locknutwrench, 43 mm 07MAA-S100200 6. Tightenthe rackguidescrew(A)ro25 N.m (2.5 kgf.m,18lbf.ft).thenloosenit. 5" Max. 1. Set the wheels in the straightaheadposition. j i-rrrr-, 2. Removethe heat shield(A). '-.i. '' ' 9 . 8N . m ( r . 0 k g f . m , 7 . 2 l b t f t ) I 32 on page 13-8). 4il N.m {a.5kgf.m,33lbt.ft) 3 . Removethe transmissionmount bracket(seestep 7 . Retightenthe rack guide screw to 6 N.m (0.6kgf m, 4 lbf.ft),then back it off to the specifiedangle. Loosenthe rackguide screw locknut(A)with the specialtool, then removethe rack guide screw (B). 07MAA-S100200 Specified Return Angle: 5' Max. Hold the rack guide screw stationarywith a wrench, and tighten the locknutby hand until it's fully seated. 9 . I n s t a l l t h es p e c i atl o o l o n t h e l o c k n u (t B ) ,a n d h o l d the rackguide screw (A) stationarywith a wrench, Tightenthe locknutan additional30" with the specialtool. 1 0 .Reinstallthe transmissionmount bracketand heat s hi el d , Removethe old sealantfrom rackguide screw,and apply new sealantto the middle of the threads(A). Looselyinstallthe rackguide screw on the steering gearDox. 1 1 .Checkfor unusualsteeringeffort through the c o m p l e t et u r n i n gt r a v e l . 12. Checkthe steeringwheel rotationplay (seepage 17-4)and the power assist(seepage 17-4). 17-13 ElectricalPowerSteering(EPSI SpecialTools . . . . . . . . . .1. .7-. 1 6 C o m p o n e nLto c a t i oInn d e x . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.7. .-.1. .7. . . . . . . Troubleshooting General Information....................... 17-18 DTCTroubleshooting Index .............. 17-22 SymptomTroubleshooting Index ............................... 17-23 SystemDescription................. ........... 17-24 CircuitDiagram .........17-26 DTCTroubleshooting ............... .......... 17-28 EPSlndicator CircuitTroubleshooting ....................... 17-47 MotorRemoval/lnstallation ............... 17-49 Steering GearboxRemoval ............... 17-51 Steering GearboxOverhaul ............... 17-55 Steering GearboxInstallation ........... 17-63 EPSControlUnitRemova l/lnsta llation....................... 17-67 Tie-rodBallJointBootReplacement .......................... 17-67 EPSComponents SpecialTools Rel.No. Tool Number (!) 07MAC-S100200 at' 070AD-P0A0100 o 07zAA-S5A0100 \ otv Description '1 B a l lJ o i n t R e m o v e r2, 8 m m Attachment,42 mm LocknutWrench 1 'l -) ,.^G) C\ _---1t h5--d-' ) u_r-.c_t t ) \L-, t I a 17-16 ComponentLocationIndex GAUGE ASSEMBLY UNDER.DASH FUSE/RELAY BOX UNDER.HOOD FUSE/RELAY BOX -,'/.,.... '.,i, X \ ] DATA LINK CONNECTORI16P) TOROUE SENSOR STEERINGGEARBOX SteeringGearboxRemoval,page 17-51 SteeringGearboxOverhaul,page 17-55 SteeringGearboxInstallation,page 17-63 EPSCONTROL UNIT EPSControlUnitRemoval/lnstallation, page17-67 MOTOR Removal/lnstallation, page l7-49 17-17 EPSComponents a GeneralTroubleshooting Information EPSIndicator Undernormalconditions, the EPSindicator comeson when the ignitlonswitchis turnedto theON(ll)position, thengoes Thisindicates off afterthe engineis started. thatthebulband itscircuitareoperating correctly. lf thereis anytroublein thesystemaftertheengineis started, will stayon,andthe powerassistis turned theEPSindicator off. WhenEPSindicator lightcomeson,thecontrolunit memorizes the DTC.In thiscase,thecontrolunitwill not activate the EPSsystemaftertheenginestartsagain,but it keepsthe EPSindicator on. WhenDTC12,16,17,18or 67 is storedin thecontrolunit,the EPSindicator will stayon untiltheDTCis erased. Whena problemis detected andthe EPSindicator comeson,thereare stayson untiltheignitionswitchis caseswhenthe indicator goesoff turned0FF,andcaseswhenthe indicator whenthesystemreturnsto normal.Eventhough automatically thesystemis operating normally, the EPSindicator will come on underthefollowingconditions: '1: Condition . Thevehiclewastraveling at least12.4mph(20km/h),then . A rapid changein vehiclespeedwas detected,then . Thevehicle(orthevehiclespeedsensorsignal)stoppedfor at least5 seconds 'l,640rpmorhigherforatleastS . T h ee n g i n se p e e d w a ss t i l l seconds C o n d i t i o n2 : Afterthevehicle(orthevehiclespeedsensorsignal)has yettheenginespeedwasstill for at least10seconds, stopped 1,640rpmor higherforat least20seconds. C o n d i t i o n3 : When is280rpmor less, andthevehicle istraveling theengine speed at a speed of6,2mph(10km/h) or morefor3 seconds. To determine theactualcauseofthe problem,question the duringwhichthe problem customer abouttheconditions takingtheaboveconditions intoconsideration. occured, DiagnosticTroubleCode(DTCI . lf theCPUcannotbeactivated, or itfails,theEPSindicator comeson,butthe DTCis notmemorized. . Thememorycanholdanynumberof DTCS. However, when thesameDTCis detected morethanonce,the mostrecent onlyone DTCis writtenoverthe priorDTC,therefore occurrence is memorized. . TheDTCS areindicated repeatedly untiltheignitionswitchis turnedOFF. . lf theDTCis not memorized,the EPSindicator blinks. 17-18 . TheDTCS arememorized in theEEPRO|(non-volatile memory)therefore the memorized DTCS cannotbe erased by disconnecting the battery. Perform thespecified procedures to clearDTCS. Self-diagnosis Self-diagnosiscan be classifiedinto two categories: . I n i t i a l d i a g n o s i sp: e r f o r m e dr i g h ta f t e rt h e e n g i n e startsand until the EPSindicatorgoes off. . Regulardiagnosis:performedright after the initial d i a g n o s i su n t i lt h e i g n i t i o ns w i t c hi s t u r n e dO F F . The EPScontrol unit performsthe following functions when a problem is detectedby self-diagnosis; '1. T u r n so n t h e E P Si n d i c a t o r . 2. Memorizesthe DTC. 3. Stops power assistand manual steeringoperation begrns. NOTE: . When DTC23 (a problemwith the circuitfor enginespeedsignal)is detected,the power a s s i sw t i l l r e t u r nt o n o r m a lw h e n t h e v e h i c l e s p e e di s 0 . 6 2m p h ( 1 k m / h )o r a b o v e . . Fot DfCs 22,23, 64, or 66 the EPSindicatorgoes off automaticallywhen the system relurnsto n o r m a l .F o ra l l o t h e rc o d e s t, h e E P Si n d i c a t o r goes off when the system is OK afterthe ignition switch is turned from OFFto ON (ll). Restrictionon PowerAssistOperation Repeatedextremesteeringforce.such as turning the steeringwheel continuouslyback-and-forth with the vehiclestopped,causesan increaseof power consumptionin the EPSmotor. The increaseof electric t h i sh e a t c u r r e n tc a u s e st h e m o t o rt o h e a tu p . B e c a u s e adverselyaffectsthe system,the control unit monitors the electriccurrent of the motor. When the control unit detectsheat build-upin the motor, it reducesthe electriccurrentto the motor graduallyto protectthe system,and it restrictsthe power assist o p e r a t i o nT. h e E P Si n d i c a t o dr o e sn o t c o m e o n d u r i n g t h i sf u n c t i o n . When steeringtorque is not appliedto the steering wheel, or when the ignition is turned off, and the motor cools,the control unit will restorethe power assist graduallyuntil it's fully restored(afterapproximately15 m i n u t e sm a x i m u m ) . How to TroubleshootEPSDTCs The troubleshootingflowchart proceduresassumethat the causeof the problem is still presentand the EPS indicatoris still on, Followingthe flowchartwhen the EPSindicatordoes not come on can result in incorrect diagnosis. The connectoriliustrationsshow the female terminal c o n n e c t o rw s i t h a s i n g l eo u t l i n ea n d t h e m a l et e r m i n a l connectorswith a double outline. 1. Ouestionthe customeraboutthe conditionswhen the problem occured,and try to reproducethe same conditionsfor troubleshooting.Find out when the EPSindicatorcame on, such as while t u r n i n g .a f t e r t u r n i n gw, h e n t h e v e h i c l ew a s a t a certain speed,etc. 2 . T u r nt h e i g n i t i o nO N ( l l ) ,a n d f o l l o wt h e p r o m p t so n the PGM Testerto displaythe DTC(s)on the screen. After determiningthe DTC,referto the DTC TroubleshootingIndex. NOTE:See the HondaPGM Testeruser's manual for specificinstructions. ServiceCheckSignalCircuit Method: 1 . W i t h t h e i g n i t i o ns w i t c hO F F ,c o n n e c t h e H o n d a P G MT e s t e r( A ) t o t h e 1 6 Pd a t al i n kc o n n e c t o(rD L C ) (B) locatedunderthe dash on the driver'sside of the vehicle. 2. When the EPSindicatordoes not come on during the test drive, but troubleshootingis done basedon the DTC,checkfor looseconnectors,poor terminal contact.etc in the affectedcircuit,beforeyou start troubleshooting. 3. After troubleshooting,clearthe DTCand test-drive the vehicle.Be sure the EPSindicatordoes not c o m eo n . How to RetrieveEPSDTCs Honda PGM Tester Method: 1, With the ignition switch OFF,connectthe Honda PGM Tester(A)to the 16Pdata link connector(DLC) (B) locatedunderthe dash on the driver'sside of thevehicle. Short the SCScircuitto body ground using the HondaPGN4Tester. T u r nt h e i g n i t i o ns w i t c hO N { l l ) . Recordthe DTC. (cont'd) 17-19 EPSComponents GeneralTroubleshootingInformation(cont'dl 5. The blinkingfrequencyindicatesthe DTC.DTCSare indicatedby a seriesof long and short blinks.One l o n g b l i n ke q u a l s1 0 s h o r tb l i n k s A . d d t h e l o n ga n d short blinkstogetherto determinethe DTC.After determiningthe DTC,referto the DTC TroubleshootingIndex. The system will not indicatethe DTCunlessthese conditionsare met: . Set the front wheels in the straightaheaddriving position. . The ignition switch is turned ON (ll). . The engine is stopped. . The SCScircuit is shortedto body ground before the ignition switch is turned ON (ll). How to ClearEPSDTCs Honda PGM Tesler Method: 1. With the ignition switch OFF,connectthe Honda PGM Tester(A)to the 16Pdata link connector(DLC) ( B )l o c a t e du n d e rt h e d a s ho n t h e d r i v e r ' ss i d eo f the vehicle. Exampleof DTC23 Long blinks Short blinks (two times) (three timesl Turn the ignition switch ON (ll),and clearthe DTC{s)by following the screenpromptson the PGM Tester. NOTE:Seethe Honda PGMTesteruser'smanual for specificinstructions. 6 . Turn the ignitionswitch OFF. 7 . Disconnectthe Honda PGM Testerfrom the DLC. 17-20 Service Check Signal Circuit Method: NOTE:Use this procedurewhen the PGM Tester softwaredoes not matchthe yearlmodelvehicleyou are working on. 1. With the ignitionswitch OFF,connectthe Honda PGM Tester(A)to the 16Pdata link connector{DLC) (B) locatedunderthe dash on the driver'sside of the vehicle. 1 . Within 4 secondsafter the EPSindicatorgoes off, returnthe steeringwheel to the straightahead driving positionagain and releasethe steering wheel.The EPSindicatorblinkstwice 4 seconds after releasingthe steeringwheel, indicatingthat the DTCwas erased. NOTE:If the EPSindicatordoes not blinktwice, an error was made in the procedureand the DTCwas not erased.Turn the ignition switch OFF,and repeatthe operationfrom step 3. Turn the ignition switch OFFafterthe EPSindicator blinkstwice. 9. Disconnectthe Honda PGM Testerfrom the DLC. 10. Performthe DTCcode output operation,and be sure that the code has been erased. With the vehicleon the ground,set the front wheels in the straightaheaddriving position. Short the SCScircuitto body ground using the HondaPGM Tester. 4. Turn the ignition switch ON (ll).The EPSindicator comes on for about 6 seconds.Within 4 secondsof turning the switch ON, while the EPSindicatoris on, turn the steeringwheel 45 degreesto the left from the straightaheaddriving position,and hold the steeringwheel in that positionuntil the EPS indicatorgoes off. Within 4 secondsafterthe EPSindicatorgoes off, returnthe steeringwheel to the straightahead driving positionand releasethe steeringwheel. The EPSindicatorcomes on again 4 secondsafter releasingthe steeringwheel, Within 4 secondsafter the EPSindicatorcomes on, turn the steeringwheel 45 degreesto the left again and hold it in that position. The EPSindicatorgoes off after 4 seconds. 17-21 EPSComponents DTCTroubleshootingIndex DTC Detection ltem Note DTC;12 A problem with voltagefor torque sensorT/SlG (seepage 17-28) D T C1: 6 A problemwith averageof voltagefor torque sensorVT3 and VT6 (seepage 17-29) DTC:17 A problemwith thevoltagefor torquesensor12V powersourceVcc1 ( s e ep a g e1 7 - 3 1 ) DTC:18 A problemwith the voltagefor torque sensor5 V power sourceVcc 2 ( s e ep a g e1 7 - 3 1 ) DfC:22 A problemwith the averagefor vehiclespeedand enginespeed ( s e ep a g e1 7 - 3 3 ) Excessivechangeof the vehiclespeed sensorsignal {seepage 17-33) DTC:23 A problemwith the engine speedsignal circuit ( s e ep a g e1 7 - 3 3 ) DTC:37 A problemwith the circuitfor input motor voltage in the EPScontrol unit (seepage 17-35) DTC:41 A problemwith the motor voltage ( s e ep a g e1 7 3 6 ) DfC: 42 A problemwith the motor driven current (opencircuitor short to grounol (seepage '17-38) DTC:43 A problem with the motor driven current (shortto power) ( s e ep a g e1 7 - 4 1 ) DTC:45 A problemwith the motor driven current (opencircuitor short to grounol (seepage 17-38) DfC: 47 A problemwith the motor relav in the EPScontrol unit { s e ep a g e1 7 - 4 2 ) DTC:50 A problem with the CPU in the EPScontrol unit ( s e ep a g e1 7 - 4 3 ) D T C :5 1 A problemwith EEPROM in the EPScontrolunlt (seepage 17-43) DTC:62 Fail-saferelay stuckON ( s e ep a g e1 7 - 4 4 ) DTC:64 A problem with low batteryvoltage (seepage 17-44) Fail-saferelay contactfailure (seepage 17-44) DTC:66 A problem with the motor driven voltage {seepage 17 45) DTC:67 A problemwith the torque sensorl/F circuit ( s e ep a g e1 7 ' 4 5 ) DTC:68 A problemwith the interlockcircuit (torque) {seepage 17-45) DTC:69 A p r o b l e mw i t h t h e i n t e r l o c kc i r c u i t( c u r r e n t ) ( s e ep a g e1 7 - 4 6 ) 17-22 Symptom TroubleshootingIndex Symptom Diagnostic procedure EPSindicatordoes not come on EPSlndicatorCircuitTroubleshooting(seepage 17-47) EPSindicatordoes not go off and no DTC is stored EPSIndicatorCircuitTroubleshooting(seepage 17-47) EPSindicatordoes not stay on, no DTCis stored,and there is no power assist 1. Checkthe motor wires betweenthe EPScontrol unit and the motor for a short to ground. Repairas needed. 2. lf the motor wires are OK, replacethe steeringgearbox {short in the motor). Also check fo] 17-23 EPSGomponents SystemDescription EPSGontrolUnit Inputsand Outputsat ConnectorA (2pl EPSCONTROLUNIT CONNECTORA {2P) Wire side of femaleterminals Termanal Wire color numbol Terminalsign (Terminalnamel Description WHT/BLU -' BAT (Plus bafterv) 2 8LK Measurement Conditions lqnitiqr switch ON (lll l Ground Constant Terminals Powersourcefor the actuatormotor Groundforthe actuator PG Voltage Battery voltage 2-Ground EPSControlUnit Inputsand Outputsat ConnectorB (2P) EPSCONTROLUNITCONNECTOB B {2P} Wire side of femaleterminals Terminal Wire colol numDer Terminalsign {Te.mioalname) Description Terminals 1 RED M1 (Motor 1 Driveslhe actuatormotor 1-Ground 2 GRN M2 Drives the actuator motor 2'Ground 17-24 Measuremenl Conditions lqnition switch ON llll Voltage EPSGontrolUnit Inputsand Outputsat ConnestorC (20P1 EPSCONTROLUNITCONNECTOR C (2OP) Wire side of femaleterminals Terminal Wire color numbel 2 5 7 Terminalsign {Terminelname} Descriplion Terminals Measuremeni Conditions {lqnitionswitch ON {lll) T/SGND Groundfor the torque (Torquesensorqround) 3-Ground tarttheenqrne Powersourcefortorque ORN vccl (Voltaqe common1 Detectstorque sensor 5 Ground Starttheengineand YEUBED VT6 (Voltaqe turnthe steerinowheel stonal torque6) ON Drivesthe EPSindicator 6 Ground E P S YEUBLU (Warninqlamp) lidhr uTltnotcatol Raisethe vehicleoff the Detectsthe vehiclespeed BLUAVHT VSP ( V e h i c l es p e e d p u l s e i groundandspinthe inputsignalfor the speed sensoror the ECM(4 pulse/ Voltage PNK BRN 10 YEL 11 GRN//EL SCS checksiqnal) {Servjco IG1 llqnition1 vcc2 Detectsservicecheck Drivesthetorquesensor Batteryvoltage on switchON (ll) on switchOFF 1'l-Ground tan the enoine Battervvoltaqe About5V on switch OFF 8LU/ORN VT3 Detectstorque sensor YEUBLK T/SIG (TorquesensorF/S Detectstorque sensor srgnal (Voltaoe toroue3) OV Banervvoltaqe Alternating voltageabout OV 5V OV-5V 8-Ground SCSnot grounded Powersourcefor activating 10-Ground (Voltaqe common2) Ba$ervvoltaqe OV About 1'l LT GRN/ B IK 19 BLU Providespower steering PSW iPowersteerinoswitch) switchsional Detectsthe enginepulse NEP 20 GRY DIAG-H with Communications HondaPGNITester About 13-GroundStarttheengineand trrrnthe steerinowheel 5 - 0 v Momentarily 5V 15-GroundStarttheengine 0-12V l7-Ground Starttheengineand nrrnthe steerinowheel 19-GroundStarttheengine,and let ;t idte 5V 20-Ground PGMTesternot 17-25 EPSComponents CircuitDiagram \ \ SPE€DSENSOR 3P CONNECTOR @ GAUGEASSEMATY22PCONNECTOR TOFOUESENSOR 6P CONNECTOR lli2l3F r;T;T-I (=J_:_LvJ Wn. !ide ot f.m.l€ r.fmin.ls 17-26 GAUGEASSEMBLY22PCONNECTON a OATA !IN( CONN€CTOA(T6P) EPSCOI{IFOIUNIT cou{EcToR A (2P) F-l vTTrvaEvnrv A EPSCONTNOLUNIT co|lNEcTofi 8 {2P} | l l wwzna MOTOF CONNECTOR riTt t2) T.rmin.l.id. oll.m.l.r.rmin.l. Wir. !.le ol l.m.l. t.tman.r. 17-27 EPSComponents DTCTroubleshooting DTC12: TorqueSensorT/SIG 1 . C l e a rt h e D T C . 1 . Turn the ignition switch ON (ll). 8 . Measurethe voltage betweenEPScontrol unit c o n n e c t oC r ( 2 0 P ) t e r m i n aNl o . 1 5 a n d b o d y g r o u n d . 2 . S t a nt h e e n g i n e . 3. Wait at least 10 seconds. Does the EPS indicatot come on? EPSCONTROL UNITCONNECTOR C (2OP) 2 3 YES Go to step 4. 5 6 1 8 0 T/SIG {YEL/BLK) NO Checkfor loosewires or poor connections.lf the connectionsare good, the system is OK at this time.l 4 . Stop the engine,and verify the DTC. Wire side ot lemaleterminals ls DTC12 indicated? I s there battery v oltage? YES Go to slep 5. NO-Perform the appropriatetroubleshootingfor the code indicated.t YES-Repair short to power in the + circuitwire betweenthe torque sensorand EPScontrol unit.l NO Go to step 9. 5 . Make sure the ignitionswitch is OFF,then disconnectEPScontrol unit connectorC (20P)and the torque sensor6P connector. Checkfor continuitybetweenEPScontrol unit c o n n e c t oC r ( 2 0 P ) t e r m i n aNl o . 1 5 a n d b o d y g r o u n d . EPSCONTROL UNITCONNECTOR C {2OP) \ 9 . Turn the ignition switch OFF. 1 0 . Checkfor continuitybetweenEPScontrol unit connectorC (20P)terminal No. 15 and the torque sensor6P connectorterminal No. 4. EPSCONTROL UNITCONNECTOR C (2OPI T/SIG (YEL/BLK) W i r es i d eo f f e m a l et e r m i n a l s TOROUE SENSOR 6PCONNECTOR T/SIG (YEL/BLK) Wire side of femaleterminals Wire side ot femaleterminals ls therecontinuity? ls there continuity? YES- Repairshortto bodygroundin thewire betweenthetorquesensorandEPScontrolunit.l YES Go to step 1'1, NO Go to step7. NO Repairopen in the wire betweenthe torque sensorand the EPScontrol unit.I 17-28 'I 1 . Substitutea known-goodEPScontrol unit, and connectthe all disconnectedconnectors. 1 2 .Start the engine. DTC16:TorqueSensorVT3andW6 1 . C l e a rt h e D T C . 2. Startthe engine. 3 . W a i t a t l e a s t1 0 s e c o n d s . Does the EPS indicator come on? Does the EPS indicator come on? YES Go to step 13. YES Go to step 4. NO Checkfor loose EPScontrol unitconnectors.lf necessary,replacethe EPScontrol unit and retest.l NO Checkfor loosewires or poor connnections.lf the connectionsare good,the system is OK at this time.l 1 3 .Stop the engine,and verify the DTC. 4. Stop the engine,and verify the DTC. ls DTCl2 indicated? ls DTC16 indicated? YES Checkfor loosetorque sensorconnectors. lf necessary,substitutea known-goodsteering gearboxand recheck.l NO-Perform the appropriatetroubleshootingfor the code indicated.! YES-Go to step 5. NO Performthe appropriatetroubleshootingfor the code indicated.t 5. Make sure the ignition switch is OFF,then disconnectEPScontrol unit connectorC (20P)and the torque sensor6P connector. 6, Checkfor continuitybetweenthe appropriateEPS control unit connectorC (20P)terminal and body ground (seetable). Terminalname C EPScontrolunitconnector terminalNo. Vccl 3 Vcc2 VT3 VT6 11 13 T/S GND 5 2 EPSCONINOTUNITCONNECIOR C (2OP) W re s d€ oltemalelermi.als ls there continuity? YES- Repairshort to body ground in the appropriatesensorcircuit betweenthe torque sensorand EPScontrol unit,! NO Go to step7. {cont'd) 17-29 EPSComponents I DTCTroubleshooting(cont'd) 7 . T u r nt h e i g n i t i o ns w i t c hO N ( l l ) . 9 . Turn the ignition switch OFF. 8 . Measurethe voltage betweenthe appropriateEPS control unit connectorC (20P)terminal and body ground (seetable). Terminalname Vccl EPScontrol unitconnector C t e r m i nN a lo . 3 Vcc2 VT3 VT6 11 T/S GND 2 13 5 EPSCONTROLUNITCONNECTOR C {2OP} 1 0 . Checkfor continuitybetweenthe appropriateEPS control unit connectorC {20P)terminal and the torque sensorterminal (seetable). T e r m i n a l TorqueSensor EPScontrol name t e r m i n aNl o , unitconnector C t e r m i n aNl o . Vccl 2 3 Vcc2 3 11 'l 't3 VT3 VT6 6 5 6 T/S GND 2 TOROUESENSOR6PCONNECTOR Vccz (GRN/YELI Wire side of f e m a l et e r m i n a l s VT6 {YEL/RED) T/S GND {PNK) Wire side of femaleterminals EPSCONTROLUNIT CONNECTOR C I2OP) VT6{YEL/RED} \ ls thete battery voltage? YES Repairshon to power in the + circuitwire betweenthe EPScontrol unit and torque sensor.l NO Go to step 9. Wire side of femaleterminals ls therecontinuty? Y E S G ot o s t e p1 1 . NO Repairopenin the appropriate torquesensor wirecircuitbetweenthe EPScontrolunitandthe t o r q u es e n s o r . l \ 17-30 1 1 .Substitutea known-goodEPScontrol unit, and reconnectthe disconnectedconnectors. 't2. DTC17: TorqueSensorVccl DTC18:TorqueSensorVcc2 Start the engine. 1 . C l e a rt h e D T C . Does the EPS indicator come on? 2 . S t a r tt h e e n g i n e . YES Go to step 13. 3. Wait at least 10 seconds. NO Checkfor looseor poor connectionsat the EPScontrol unit and the torque sensorconneclors. lf the connectionsare good, replacethe EPScontrol u n i ta n d r e c h e c k . I 1 3 .Stop the engine,and verify the DTC. ls DTC16 indicated? Does the EPS indicator come on? YES Go to step 4. NO Checkfor loosewires or poor connections.lf the connectionsare good, the system is OK at this time.I YES Replacethe steeringgearboxand recheck.l 4 . Stop the engine,and verify the DTC. NO Performthe appropriatetroubleshootingfor the code indicated.l Is DTCl7 or DTCl8 indicated? YES Go to step 5. NO Do the troubleshootingfor the DTc indicated.I Make sure the ignition switch is OFF,then disconnectEPScontrol unit connectorC (20P)and the torque sensor6P connector. Checkfor continuitybetweenEPScontrol unit c o n n e c t oC r ( 2 0 P ) t e r m i n aNl o . 3 a n d b o d y g r o u n d . UNITCONNECTOR C (2OP) EPSCONTROL Wiresideo{ femaleterminals ls there continuity? Y E S R e p a i rs h o n t o b o d y g r o u n di n t h e w i r e betweenthe torque sensorand EPScontrol unit.I NO Go to step 7. (cont'd) 17-31 EPSComponents DTCTroubleshooting(cont'dl 7. Checkfor continultybetweenEPScontrol unit c o n n e c t oC r ( 2 0 P t)e r m i n a lN o . 3 a n d t h e t o r q u e sensor6P connectorterminal No. 2. EPSCONTROL UNITCONNECTOR C I2OP) \ 9. Checkfor continuitybetweenEPScontrol unit connectorC {20P)terminal No. 11 and the torque sensor6P connectorterminal No. 3. EPSCONTROL UNITCONNECTOR C (2OP} Vcc2(GRN/YEL) Wire side ol lemale terminals Wire side of femaleterminals ls thete continuity? ls therc continuity? YES Go to step 8. YES-Go to step 10. NO Repairopen in the wire betweenthe torque s e n s o ra n d E P Sc o n t r o lu n i t . I NO Repairopen in the wire betweenthe torque sensorand EPScontrol unit.l 8 . Checkfor continuitybetweenEPScontrol unit c o n n e c t oC r ( 2 0 P t)e r m i n a lN o . 1 1 a n d b o d y g r o u n d . EPSCONTROL UNITCONNECTOR C (2OP) 1 0 .Substitutea known-goodEPScontrol unit, and connectall the disconnectedconnectors. 1 1 .Start the engine. Does the EPS indicator come on? 2 3 lvcc2 5 6 1 8 0 {GRN/YEL) Wire side of femaleterminals YES Go to step 12. NO Checkfor looseor poor connectionsat the EPScontrol unit and the torque sensorconnectors. lf the connectionsare good, replacethe EPScontrol u n i ta n d r e c h e c k . l 12. Stop the engine,and verity the DTC. ls DTC17 or DTC18 indicated? ls therecontinuity? YES-Replace the steeringgearboxand recheck.l YES Repairshortto bodygroundin thewire betweenthetorquesensorandEPScontrolunit.t NO Goto step9. 17-32 NO Performthe appropriatetroubleshootingfor the code indicated.l DTC22: VehicleSpeedSensorSignal 3 . Blockthe rearwheels and raisethe vehicle,and make sure it is securelysupported. DTC23: EngineSpeedSignal 4 . T u r nt h e i g n i t i o ns w i t c hO N ( l l ) . NOTE: . lf the MIL indicatoris ON, troubleshootthe PGIVI-Fl systemfirst. . Eventhough the system is operatingnormally,the EPSindicatorwill come on underthe following conditions. - C o n d i t i o n1 : . The vehiclewas travelingat least '12.4mph (20 km/h),then . A rapld changein vehiclespeedwas detected, then . T h e v e h i c l e( o rt h e v e h i c l es p e e ds e n s o rs i g n a l ) stoppedfor at least5 seconds,and . The engine speedwas still 1,640rpm or higherfor at least5 seconds - Condition2: After the vehicle(or the vehiclespeedsensor signal)has stoppedfor at least10 seconds,yetthe e n g i n es p e e dw a s s t i l l 1 , 6 4 0r p m o r h i g h e rf o r a t least20 seconds. - Condition3: W h e nt h e v e h i c l es p e e di s 1 0 k m / h ( 6 . 2m p h )o r a b o v ea n d t h e e n g i n ei s r u n n i n ga t 2 8 0 r p m o r below for 3 seconds. 1. Startthe engineand checkthe tachometer. ls the tachometer working correctly? 5 . Blockthe right front wheel, and slowly rotatethe left front wheel, and measurethe voltage between E P Sc o n t r o lu n i tc o n n e c t oC r ( 2 0 P ) t e r m i n aNl o . 7 a n d b o d yg r o u n d . EPSCONTROL UNITCONNECTOR C {2OP) Wire side of femaleterminals Does the voltagepulse 0 V and 5 V? YES Go to step 6. NO Repairopen in the wire betweenthe EPS control unit and the VSS. lf the wire is OK,checkfor a loose or poor connectionsat the EPScontrol unit. lf necessary,substitutea known-goodEPScontrol u n i t ,a n d r e c h e c k . l YES- Go to step 2. N O - G o t o s t e p9 . 2. Test-drivethe vehicleabove 15 km/h {9.3mph). ls the speedometerworking correctly? YES Go to step 3. NO-Perform the speedometersystem troubleshooting{see page22-651.a (conr'd) 17-33 EPSGomponents DTCTroubleshooting(cont'dl Turn the ignition switch OFF,and disconnectEPS control unit connectorC (20P). 7 . Startthe engine,and let it idle. 11. Measurethe voltage betweenEPScontrol unit c o n n e c t oC r ( 2 0 P ) t e r m i n aNl o . 1 9 a n d b o d y g r o u n d . EPSCONTROLUNITCONNECTOR C {2OPI 8 . Measurethe voltage betweenEPScontrol unit c o n n e c t oC r { 2 0 P t) e r m i n a lN o . 1 9a n d b o d y g r o u n d . EPSCONTROL UNITCONNECTOR C {2OP) Wiresideof femaleterminals ls there about 6 V at idle? (With the metet set tor trequency, is therc 33 Hz per 1,000 engine rpn?) Wire side of {emaleterminals ls there about 6 V at idle? (With the meter set lol t requency,is there 33 Hz per 1,000engine rpm?) YES Checkfor loose EPScontrol unitconnectors. lf necessary,substitutea known-goodEPScontrol u n i ta n d r e c h e c k . I NO Go to step YES Checkfor loose EPScontrol unit connectors. lf necessary,substitutea known-goodEPScontrol u n i ta n d r e c h e c k . l '12. 1 2 .Turn the ignition switch OFF. 1 3 .Disconnectthe ECMconnectorE (31P)connector. NO Repairopen in the wire betweenthe EPS c o n t r o lu n i ta n d t h e E C M . I 9 . Turn the ignition switch OFF,and disconnectEPS control unit connectorC (20P). 1 0 .Startthe engine,and let it idle. ! 17-34 '14. Checkfor continultvbetweenEPScontrol unit c o n n e c t oC r ( 2 0 P ) t e r m i n aNl o . 1 9 a n d E C M connectorE (31P)terminal No. 26. ECMCONNECTOR E {31PI DTC37: EPSControlUnitInternal Circuit (lnputCircuitForMotorVoltage) 1 . C l e a rt h e D T C . 2. Startthe engine. 3. Turn the steeringwheel from lock-to-lockseveral times, and wait 10 secondsor more. Does the EPS indicator come on? YES Go to step 4. NO Checkfor loosewires or poor connections.lf the connectionsare good,the system is OK at this trme.l ls thete continuity? 4. Stop the engine,and verify the DTC. YES-Go to step 15. ls DTC 37 indicated? N O - R e p a i r o p e n i n t h e w i r e b e t w e e nt h e E P S c o n t r o lu n i ta n d E C M . I Y€S Checkfor loose EPScontrol unit conneclors. lf necessary,substitutea known-goodEPScontrol u n i ta n d r e c h e c k . l 1 5 . Disconnectthe gauge assembly22Pconnector. Checkfor continuitybetweenEPScontrol unit c o n n e c t oC r ( 2 0 P ) t e r m i n aNl o . 1 9 a n d b o d y g r o u n d , NO Performthe appropriatetroubleshootingfor the code indicated.l EPSCONTROL UNITCONNECTOR C (2OP} Wiresideof femaleterminals ls there continuity? Y E S R e p a i rs h o r t t ob o d y g r o u n di n t h e w i r e betweenthe EPScontrol unit, the test tachometer connector,the gaugeassembly,and the ECM.I NO Checkfor loose ECMcontrol unit connectors. lf necessary,substitutea known-goodECMcontrol u n i ta n d r e c h e c k . I 17-35 EPSComponents .l DTCTroubleshooting(cont'dl DTC41: VoltageForMotor 7. Checkfor continuitybetweenEPScontrol unit c o n n e c t oB r ( 2 P ) t e r m i n aNl o . 2 a n d b o d y g r o u n d . 1 . C l e a rt h e D T C . EPSCONTROLUNITCONNECTOR B I2P) 2 . S t a r tt h e e n g i n e . 3. Turn the steeringwheel from lock-to-lockseveral times, and wait 10 secondsor more, Tit M2 {GRN)FJ -r Does the EPS indicator come on? o) YES-Go to step 4. I T NO Checkfor loosewires or poor connections.lf the connectionsare good,the system is OK at this time.l 4. Stop the engine,and verify the DTC. ls DTC 41 indicated? Wiresideof femaleterminals ls there continuity? Y E S - R e p a i rs h o r tt o b o d y g r o u n di n t h e G R Nw i r e betweenthe EPScontrol unit and the motor,l YES Go to step 5. NO Go to step 8. NO Performthe appropriatetroubleshootingfor t h e c o d ei n d i c a t e d . l 5. Make sure the ignition switch is OFF,then disconnectEPScontrol unit connectorB (2P)and the motor 2P conneclor. Checkfor continuitybetweenEPScontrol unit c o n n e c t oB r ( 2 P ) t e r m i n aNl o . 1 a n d N o . 2 . B {2P) EPSCONTROL UNITCONNECTOR 6. Checkfor continuitybetweenEPScontrol unit c o n n e c t oB r ( 2 P )t e r m i n a lN o . 1 a n d b o d y g r o u n d . B {2P} EPSCONTROLUNIT CONNECTOR M2 (GRNI M1 (RED}H F---t|| Itr (f)) T ,L Wiresideof femaleterminals ls there continuity? YES Repairshort to body ground in the REDwire betweenthe EPScontrol unit and the motor.! N O - G o t o s t e p7 . 17-36 Wiresideof femaleterminals ls there continuity? YES Repairshort betweenthe REDand GRN wires in the motor circuit betweenthe EPScontrol u n i t a n dt h e m o t o r . l NO Go to step 9. \ 9. Turn the ignition switch ON (ll),and measurethe voltagebetweenEPScontrol unit connectorB (2P) terminal No. 1 and body ground EPSCONTROLUNITCONNECTOR B (2P) 1 1 .T urn the ignition switch is OFF. Substitutea known-goodEPScontrol unit, and connectall the disconnectedconnectors. 1 3 .Start the engine,and turn the steeringwheel from lockto lock severaltimes. M1 IREDI H r-_-1 || ,<.)\ uL,/ Y tr I WiresideoI femaleterminals Does the EPS indicator come on? Y E S - G o t o s t e p1 4 . NO-Check for loose or poor connectionsatthe EPScontrol unit and the motor connections.lfthe connectionsare good, replacethe EPScontrol unit andrecheck.l 1 4 . S t o pt h e e n g i n e a , n d v e r i t yt h e D T C . Is there battety voltage? ls DTC 41 indicated? YES Repairshort to power in the + circuitwire betweenthe EPScontrol unit and the motor.I YES Replacethe steeringgearboxmotor and recheck.l N O - G o t o s t e p1 0 . 1 0 .Measurethe voltagebetweenEPScontrol unit NO Performthe appropriatetroubleshootingfor t h e c o d ei n d i c a t e d . l c o n n e c t oB r ( 2 P ) t e r m i n aNl o . 2 a n d b o d y g r o u n d . EPSCONTROL B (2P) UNITCONNECTOR razrcnrrrr l{. I l-t I (v) Y I Wire side of femaleterminals ls there battery voltage? YES-Repair shortto power in the - circuitwire betweenthe EPScontrol unit and the motor.! N O G o t o s t e p1 1 . 17-37 EPSComponents DTCTroubleshooting(cont'd) DTC42,45: MotorDrivenCurrent { 7. Checkfor continuitybetweenEPScontrol unit c o n n e c t oB r ( 2 P l t e r m i n aNl o . 2 a n d b o d y g r o u n d . 1. Clearthe DTC. EPSCONTROLUNITCONNECTOR B I2PI 2. Start the engine. 3. Turn the steeringwheel from lock-to-lockseveral t i m e s ,a n d w a i t 1 0 s e c o n d so r m o r e . r',rz tcnnrt ll -](o) Does the EPS indicator come on? T YES- Go to step 4. I NO-Check for loosewires or poor connections.lf the connectionsare good, the system is OK at this time.I Wiresideof femaleterminals Stop the engine,and verify the DTC. lsthere continuity? ls DTC 42 or 45 indicated? YES Repairshort to body ground in the GRNwire betweenthe EPScontrol unit and the motor.l YES-Go to step 5. NO Go to step 8. NO- Performthe appropriatetroubleshootingfor t h e c o d ei n d i c a t e d . I M a k es u r et h e i g n i t i o ns w i t c hi s O F F ,t h e n disconnectEPScontrol unit B connector(2P)and the motor 2P connector. Checkfor continuitybetweenEPScontrol unit c o n n e c t oB r ( 2 P )t e r m i n a lN o . 1 a n d N o . 2 . EPSCONTROL UNITCONNECTOR B {2P) 6 . Checkfor continuitybetweenEPScontrol unit c o n n e c t oB r ( 2 P ) t e r m i n aNl o . 1 a n d b o d y g r o u n d . EPSCONTROL UNITCONNECTOR B I2P) M2 {GRN) M1 IRED}H I f2-l W i r es i d eo f f e m a l et e r m i n a l s (C)) T I Wire side of femaleterminals ls there continuity? YES Repairshort to body ground in the REDwire betweenthe EPScontrol unit and the motor,I N O - G o t o s t e p7 . 17-38 ls there continuity? YES Repairshort betweenthe REDand GRN wires in the motor circuit betweenthe EPScontrol u n i ta n d t h e m o t o r . l NO Go to step 9. 9. Turn the ignition switch ON (ll),and measurethe voltage betweenEPScontrol unit connectorB (2P) t e r m i n a lN o . I a n d b o d y g r o u n d . EPSCONTROLUNITCONNECTOR B (2PI M1{RED}H T-----l | | (v) 11. Checkfor continuitybetweenEPScontrol unit connectorB (2P)terminal No. 1 and the motor 2P connectorterminal No. 2. EPSCONTROLUNIT B 12P) CONNECTOR MOTORCONNECTOR {2PI M1 IRED) lil M1 (RED} I I Wiresideo{ Iemaleterminals ls there battety voltage? YES-Repair short to power in the + circuitwire betweenthe EPScontrol unit and motor.l Wire side of femaleterminals ls therecontinuity? YES-Go to step'12. NO-Repairopenin the REDwire betweenthe EPS controlunitandthe motor.l NO Go to step 10. 1 0 .Measurethe voltage betweenEPScontrol unit c o n n e c t oB r { 2 P } t e r m i n aNl o . 2 a n d b o d y g r o u n d . EPSCONTROL UNITCONNECTOR B (2P} mzrcnrur ll-l A (v) Y I W i r es i d eo f f e m a l et e r m i n a l s ls there battery voltage? Y E S R e p a i rs h o r tt o p o w e ri n t h e + c i r c u i t w i r e betweenthe EPScontrol unit and the motor.a N O - G o t o s t e p1 1 . (cont'd) 17-39 EPSGomponents L DTGTroubleshooting(cont'd) 12. Checkfor continuitybetweenEPScontrol unit c o n n e c t oB r ( 2 P ) t e r m i n aNl o . 2 a n dt h e m o t o r2 P c o n n e c t otre r m i n a lN o . 1 . EPSCONTROLUNIT CONNECTORB I2PI MOTORCONNECTOR {2P) 15. Stop the engine,and verify the DTC. ls DTC 42 or 45 indicated? YES Replacethe steeringgearboxmotor and recheck.l NO Performthe appropriatetroubleshootingfor the code indicated.l M2 IGRN) Wire side of femaleterminals ls there continuity? Y E S - G o t o s t e p1 3 . NO-Repair open in the GRNwire betweenthe EPS control unit and the motor.l Checkfor loosewires or poor connections,if the connectionsare good. substitutea known-good EPScontrol unit, and connectallthe disconnected connectors. 1 4 . Startthe engine,and turn the steeringwheel from lockto lock severaltimes. Does the EPS indicatot come on? YES Go to step 15. NO Checkfor loose EPScontrol unitconnectors.lf necessary,replacethe EPScontrol unit and recheck.a 17-40 ( DTCtli|: MotorDrivenCurrentis Excessively Hish 1 . C l e a rt h e D T C . 8. Measurethe voltagebetweenEPScontrol unit c o n n e c t oB r ( 2 P ) t e r m i n aNl o . 2 a n d b o d y g r o u n d . EPSCONTROL UNITCONNECTOR B I2PI 2. Startthe engine. 3. Turn the steeringwheel from lock-to-lockseveral '10 times, and wait secondsor more. Til M2tcRNl F-l f---1 z I (v) Does the EPS indicator come on? Y I YES Go to step 4. NO-Check for loosewires or poor connections.lf the connectionsare good,the system is OK at this ttme.I W i r es i d eo f f e m a l et e r m i n a l s ls there battety voltage? 4. Stop the engine,and verify the DTC. ls DTC 43 indicated? YES- Repairshort to power in the - circuitwire betweenthe EPScontorl unit and the motor.! YES Go to step 5. NO-Go to step 9. NO-Perform the appropriatetroubleshootingfor the code indicated.I 5. Make sure the ignition switch is OFF,then disconnectEPScontrol unit connectorB (2P)and the motor 2P connector. 9 . Turn the ignition switch OFF. 1 0 . Checkfor continuitybetweenEPScontrol unit c o n n e c t oB r ( 2 P )t e r m i n a l sN o . 1 a n d N o . 2 . EPSCONTROL UNITCONNECTOR B {2P) 6. Turn the ignition switch ON (ll). 7. Measurethe voltage betweenEPScontrol unit '1 c o n n e c t oB r ( 2 P ) t e r m i n aNl o . a n d b o d y g r o u n d . EPSCONTROLUNITCONNECTOR B {2P} M2 {GBN) M 1 { R E o )H T------t I I Itr (v) T -L Wiresideot Iemaleterminals Wire side of femaleterminals ls there continuity? YES Repairshort betweenthe GRN and RED wires in the motor circuitbetweenthe EPScontrol u n i ta n d t h e m o t o r . l N O G o t o s t e p1 1 . ls therc battery voltage? YES Repairshort to power in the + circuitwire betweenEPScontrol unit and motor.l N O - G o t o s t e p8 . ( c o n td ) 17-41 EPSComponents DTCTroubleshooting(cont'dl 1 1 .Substitutea known-goodEPScontrol unit, and connectall the disconnectedconnectors. 1 2 .Start the engine,and turn the steeringwheel from ( DTC47: EPSControlUnitlnternalCircuit (PowerRelay) 1. Clearthe DTC. lockto lock severaltimes. 2. Startthe engine. Does the EPS indicator come on? Does the EPS indicator come on? YES Go to step 13. NO -Check for loose or poor connectionsat the EPScontrol unit and the motor connections.lf the connectionsare good, replacethe EPScontrol unit and recheck.l 1 3 .Stop the engine,and verity the DTC. YES-Go to step 3, NO-Check for loosewires or poor connections,lf the connectionsare good, the system is OK at this time.I 3. Stop the engine,and verify the DTC. ls DTC 43 indicated? ls DTC 47 indicated? YES-Replacethe steeringgearboxmotor and recheck.tl YES Checkfor loose EPScontrol unit connectors. lf necessary,substitutea known-goodEPScontrol u n i ta n d r e c h e c k . l NO-Perform the appropriatetroubleshootingfor the code indicated.l 17-42 NO Performthe appropriatetroubleshootingfor the code indicated.I DTC50: EPSControlUnit InternalCircuit (CPUor Microcomputer) DTC51: EPSControlUnitInternalCircuit (EEPROM) 1. Clearthe DTC. 1 . C l e a rt h e D T C . 2. Start the engine. 2. Start the engine. Does the EPS indicator come on? Does the EPS indicatot come on? YES Go to step 3. YES-Go to step 3. NO Checkfor loosewires or poor connections.lf the connectionsare good. the system is OK at this t i m e .t NO-Check for loosewires or poor connections.lf the connectionsare good, the system is OK at this time.I 3. Stop the engine,and verify the DTC. 3. Stop the engine,and verify the DTC. ls DTC 50 indicated? ls DTC 51 indicated? YES-Check for looseor poor connectionsat the EPScontrol unit connections.lf the connectionsare good, substitutea known-goodEPScontrol unit. lf the symptom/indicationgoes away, replacethe original EPScontrol unit.l YES-Check for looseor poor connectionsat the EPScontrol unit connections.lf the connectionsare good. substitutea known-goodEPScontrol unit. lf the symptom/indicationgoes away, replacethe original EPScontrol unit.! NO Performthe appropriatetroubleshootingfor the code indicated.t NO Performthe appropriatetroubleshootingfor the code indicated.t 17-43 EPSComponents (cont'dl DTCTroubleshootang DTC62: EPSControlUnit InternalCircuit (Fail-safe RelayStuckON) '1. ( Low DTC64: BatteryVoltageis Excessively (Fail-safe RelayContactFailureandMotor VoltageFallOff) Clearthe DTC. 2. Startthe engine. 1 . C l e a rt h e D T C . 2. Startthe engine. Does the EPS indicator come on? Does the EPS indicatot come on? YES-Go to step 3. YES Go to step 3. NO-Check for loosewires or poor connections.lf the connectionsare good, the system is OK at this time.I NO Checkfor loosewires or poor connections.lf the connectionsare good,the system is OK at this trme.l 3. Stop the engine,and verify the DTC. 3. Stop the engine,and verify the DTC. ls DTC 62 indicated? ls DTC 64 indicated? YES-Check for loose or poor connectionsat the EPScontrol unit. lf the connectionsare good, substitutea known-goodEPScontrol unit. lf the symptom/indicationgoes away, replacethe originalEPScontrol unit and recheck.l YES Go to step 4. NO-Perform the appropriatetroubleshootingfor the code indicated.t NO Performthe appropriatetroubleshootingfor the code indicated. '18(604) 4. Checkthe No. fuse in the under-hoodfuse/ relay box, and reinstallthefuse if it is OK. Is the f use OK? YES Go to step 5. NO Replacethe fuse and recheck.l 5. DisconnectEPScontrol unit connectorA (2P). 6. Measurethe voltage betweenEPScontrol unit c o n n e c t oA r ( 2 P )t e r m i n a lN o . 1 a n d b o d y g r o u n d . -Blwt{r/Bl.urH l \9 I ls there battety voltage? YES- Checkfor loose or poor connectionsat the EPScontrol unit connectors,and checkfor a poor ground at G 151. lf necessary,substitutea knowngood EPScontrol unit and recheck.l NO Repairopen in the WHT/BLUwire between t h e N o . 1 8 ( 6 0 , 4 ) f u saen d E P Sc o n t r o lu n i t . l 17-44 DTC66,68: EPSControlUnitlnternalCircuit DTC67: TorqueSensorl/FCircuit 1 . C l e a rt h e D T C . 1. Clearthe DTC. 2. Start the engine. 2 . S t a r tt h e e n g i n e . 3. Turn the steeringwheel from lock-to-lockseveral times, and wait 10 secondsor more. 3. Turn the steeringwheelfrom lock-to-lockseveral times, and wait 10 secondsor more. Does the EPS indicator come on? Does the EPS indicator come on? YES-Go to step 4. YES-Go to step 4. NO-Check for loosewires or poor connections.lf the connectionsare good.the system is OK at this time.l NO Checkfor loose wires or poor connections.lf the connectionsare good, the system is OK at this time. ! 4. Stop the engine,and verify the DTC. 4. Stop the engine.and verify the DTC. ls DTC 67 indicated? ls DTC 66 or 68 indicated? YES-Check for looseor poor connectionsat the EPScontrol unit. lf the conneclionsare good, substitutea known-goodEPScontrol unit. lf the symptom/indicationgoes away, replacethe original EPScontrol unit and recheck.I NO Performthe appropriatetroubleshootingfor the code indicated.t YES Checkfor looseor poor connectionsat the EPScontrol unit. lf the connectionsare good, substitutea known-goodEPScontrol unit. lf the symptom/indicationgoes away, replacethe original EPScontrol unit and recheck.! NO-Perform the appropriatetroubleshootingfor the code indicated.I 17-45 EPSComponents DTCTroubleshooting(cont'd) DTC69: EPSControlUnit InternalCircuit 1 . C l e a rt h e D T C . 2. Startthe engine. 3. Turn the steeringwheel from lock-to-lockseveral times, and wait 10 secondsor more, Does the EPS indicator come on? YES Go to step 4. NO-Check for loosewires or poor connections.lf the connectionsare good, the system is OK at this time.l 4. Stop the engine,and verify the DTC. ls DTC 69 indicated? YES-Check for loose or poor connectionsat the EPScontrol unit. lf the connectionsare good, substitutea known-goodEPScontrol unit. lf the symptom/indicationgoes away, replacethe original EPScontrol unit and recheck.l NO- Performthe appropriatetroubleshootingfor the code indicated.l 17-46 EPSIndicatorCircuitTroubleshooting 1 . Turn the ignitionswitch ON (ll),startthe engine, and watch the EPSindicator. 5. Turn the ignition switch OFF. 6. DisconnectEPScontrol u n it connectorC (20P). Does the EPS indicator come on? 7 . T u r nt h e i g n i t i o ns w i t c hO N ( l l ) . YES lf the EPSindicatorcomes on and goes off, it's OK. lf the EPSindicatorstayson or blinks.go to s t e p1 2 . 8. ConnectEPScontrol unit connectorC (20P) terminal No. 6 to body ground with a jumper wire. NO Go to step 2. EPSCONTBOLUNIT CONNECTOBC {2OP) Turn the ignition switch OFF,then ON (ll) again, and watch the brakesystem indicator, Does the brake system indicator come on? YES-Go to step 3. W i r e s d € o f l e m a l e 1 6 r m i n as NO Repairopen in the indicatorpower source circuit.l . B l o w nN o . 1 0 ( 7 . 5 A ) f u s e . . Open in the wire betweenthe No. 10 (7.5A)fuse and gaugeassembly. . Open circuitinsidethe under-dashfuse/relaybox, . Faultygauge assembly. Does the EPS indicatot come on? YES Go to step 9. NO Repairopen in the wire betweenthe gauge assemblyand the EPScontrol unit.l 3 . Turn the ignitionswitch OFF, 9 . Turn the ignitionswitch OFF. 4 . Connecta jumper wire betweenthe gauge assembly22Pconnectorterminal No. 13 and body g r o u n d ,t h e nt u r n t h e i g n i t i o ns w i t c hO N ( l l ) . (Blueconnector) 22PCONNECTOR GAUGEASSEMBLY 1 0 .DisconnectEPScontrol unit connectorA (2P), ' l1 . Checkfor continuitybetweenEPScontrol unit connectorA terminal No. 2 and body ground. A I2PI EPSCONTROL UNITCONNECTOA w i r e s d e o f t e m a l et e r m i n a l s Wiresideof femaleterminals ls there continuity? Does the EPS indicator come on? YES-Go to step 5. N O I n s p e ctth e E P Si n d i c a t o b r u l b ,i f t h e b u l b i s O K , r e p l a c et h e b u l bc i r c u i tb o a r di n t h e g a u g e assembly.l YES Checkfor loose or poor connectionsat the E P Sc o n t r o lu n i t .l f t h e c o n n e c t i o nasr e g o o d , substitutea known-goodEPScontrol unit. lf the symptom/indicationgoes away, replacethe originaE l P Sc o n t r o lu n i ta n d r e c h e c k . I N O R e p a i ro p e ni n t h e w i r e o r a b a d g r o u n da t G151,t (cont'd) 17-47 EPSComponents I EPSIndicatorCircuitTroubleshooting(cont'dl 1 2 .Turn the ignitionswitch OFF. 16. Measurethe voltagebetweenEPScontrol unit '1 connectorA (2P)terminalNo. and body ground. 1 3 .DisconnectEPScontrol unit connectorC (20P). 1 4 .Turn the ignitionswitch ON (ll). Does the EPS indicator come on? YES-Repair short to ground in the YEUBLUwire betweenthe gaugeassemblyand the EPScontrol unit,or replacethe bulb circuit board in the gauge assembly.l NO-Go to step 15. Measurethe voltagebetweenEPScontrol unit c o n n e c t oC r ( 2 0 P ) t e r m i n aNl o . 1 0 a n d b o d y g r o u n d . EPSCONTROL UNITCONNECTOR C I2OP) EPSCONTROL UNITCONNECTON A (2P} +B (WHT/BLUIH Itr v -L Wire side of female terminals ls there battery voltage? YES-Go to step 17. NO-Check for a blown No. 18 (604)fuse in the under-hoodfuse/relaybox or open/shortin the WHT/BLUwire betweenthe under-hoodfuse/relay box and the EPScontrol unit.l 1 7 . Turn the ignition switch OFF. 1 8 , ReconnectEPScontrol unit connectorA (2P). 1 9 . T u r nt h e i g n i t i o ns w i t c hO N ( l l ) . 20. Measurethe voltage betweenEPScontrol unit connectorC (20P)terminalNo. 8 and body ground. Wire side of femaleterminals ls therebatteryvoltage? EPSCONTROL UNITCONNECTOR C (2OP) Y E S - G ot o s t e p1 6 . NO-Repairopenin thewire betweenEPScontrol unitconnector C (20P)andthe No, 10(7.5A)fuse.t Wiresideof femaleterminals ls therc about 10 V? YES Checkfor looseor poor connectionsat the EPScontrol unit. lf the connectionsare good, substitutea known-goodEPScontrol unit. lf the symptom/indicationgoes away, replacethe originalEPScontrol unit and recheck.l NO Repairshort to ground in the BRNwire betweenthe data link connectorand the EPS c o n t r o lu n i t . I 17-48 Motor Removal/lnstallation Bemoval 1. Make sure you havethe anti-theftcode for the radio, then write down the frequenciesfor the preset buttons. 4. Removethe connectorbracket(A) onthegearbox housing,and disconnectthe motor 2P connector (B). 9.8 N.m {1.0kgf.m, 2. Disconnectthe negativecablefrom the battery,and wait 3 minutesbefore beginningwork. 3. Removethe air cleanerassembly(A). 5. Removethe motor {A) from the gearboxhousing. 6. Removethe O-ring (B)and discardit. (cont'd) 17-49 EPSComponents (cont'dl Motor RemovaUlnstallation ( r 0 .Installthe motor on the gearboxby engagingthe lnsiallation 7. Cleanthe mating surfaceof the motor (A) and gearbox. q 8 x '1.25 mm 20 N.m 12.0kgt.m,7.2lbl ftl E motor shaft and worm shaft (D).Note the motor installationposition{directionof motor wires). 1 1 .Beforetighteningthe bolts,turn the motor two or three times right and left about 45 degrees.lvlake sure the motor is evenlyseatedon the steering gearboxand that the O-ring is not pinchedbetlveen the mating surfaces. 1 2 .Installthe removedDartsin the reverseorder of removal.and note these items: L==- c].E@ Apply a thin coat of siliconegrease(P/N087338070E)tothe new O-ring(B),and carefullyfit it on the motor. 9 . Apply grease{Nippon GreaseWR-S or equivalent steeringgear grease)into the motor shaft (C). 17- 5 0 lvlakesure the motor 2P connectoris properly connected. lvlakesurethe motor and EPSwires are not caughtor pinchedby any parts. Reconnectthe negativecableto the battery. D o t h e e n g i n ec o n t r o lm o d u l e( E C M )i d l e l e a r n p r o c e d u r e( s e ep a g e1 1 - 1 3 9 ) . Enterthe anti-theftcode for the radio station Dresets.Resetthe clock, Do the oower window control unit reset procedure(seepage 22-1241. 1 3 .After installation,startthe engine,and let it idle. Turn the steeringwheel from lock-to-lockseveral times. Checkthat the EPSindicatordoes not come on. SteeringGearboxRemoval Special Tool Required Ball ioint remover,2Smm 0TlvlAC-S100200 8. Removethe cotter pin (A)from the tie-rod balljoint nut {B),and loosenthe nut. _t\ 1. Raisethe front of vehicle,and make sure it is securelysupponed. 2. Removethe front wheels. R e m o v et h e d r i v e r ' sa i r b a g ( s e e p a g e 2 3 - 1 1 3 ) . 4 . Removethe steeringwheel (seepage 17-6). 5 . Removethe motor on the steeringgearbox (see p a g el T - 4 9 ) . 6 . Removethe driver'sdashboardlower cover (see page20-59)and under cover {seepage20-60). 7 . Removethe steeringjoint bolts (A),and disconnect the steeringjoint by moving the steeringjoint (B) toward the column. l,a.: '/ --L- r0 mm HEXNUT 07MAC-S100200 9 . Separatethe tie-rod balljoint and damper steering arm usingthe specialtool (seepage 18-10).Repeat on the other side of the vehicle. 1 0 .G r a s pt h e r i g h ts i d et i e - r o d a, n d p u l lt h e r a c ka l l t h e way to the passenger'sside, 1 1 . Removethe heat shield (A) mounting bolts from the body stiffener,and let the heat shield lay againstthe exhaust. ' i l (cont'd) 17-51 EPSComponents SteeringGearboxRemoval(cont'd) 12. Disconnect the EPSwire harness6Pconnector (A), andremovethe EPSwire harness(B)andmountino bracket(C). 1 4 . R e m o v et h e e n g i n ew i r e h a r n e s sc l a m p s{ A ) f r o m the three mounting brackets. -a--zi i F--_1 t5. 1 3 . Removethe groundcableterminal(A)fromthe steeringgearboxhousing. ..( .,/ a bH \ ry T,-.lt'^ \ '" _ - 1 . . 1 . - ' 17-52 \-- Removethe heaterhose {B)from the bracket. 1 6 . Open the heatervalve cableclamp (A),and disconnectthe heatervalve cable(B).Removethe heatervalve (C)from the bulkhead,and move jt aside. I 17. Removethe bodv stiffener(A). 19. Removethe steeringstiffenerB from the right side of the steeringgearbox. i t1-:: ., 1 8 .Removelhe steeringstiffenerA from the left side of the steeringgearbox. 20. Lower the steeringgearbox,and rotateit so the pinion shaft points upward. 21. Removethe pinion shaft grommet (A)from the top of the torque sensor. (cont'd) 17-53 EPSComponents SteeringGearboxRemoval{cont'd) 22. Move the steeringgearboxand tie-rod ends as an assemblyto the wheelwellopening on the passenger'sside. 23. Carefullyraisethe driver'sside (pinionside)ofthe steeringgearbox(A) and tie-rod (B) until clearsthe mastercylinderand under-hoodfuse relay box, then removethe steeringgearbox.Be careful not to damagethe hoses,linesand wtre narnesses. 17-51 SteeringGearboxOverhaul ExplodedView mm I x '1.25 ftl 20 N.m(2.0kgf.m,7.2lbt O.RING Replace. CONNECTOR PINION SHAFT GROMMET RACKGUIDE -@ . . DISCWASHEB @'--g -sPRrNG SCREW L)-RACKGUIDE 6 ' v---\ \.oc**u. v \ >-*\{i#r^i --. i 6^:,; BOOT BAND Beplace. '' -'t '"''/ s(./t' J -l . GUIDE \ SLTDER SRACKET {^il \J" \ @ II \ \ \ \ BOOTBAND - Replace. LOCKWASHER Replace. \ stot *,tttc Renrace \ LocK '162 scREw N.m l t o . sr g f m , 1 1 9 l bfft ) Beqtace. TIE.RODEND rtE-ROD 54 N m {5.5kgf.m,40lbf ft) 44 N m {4.5 kgf.m, 33 tbt.ft) (cont'd) 17-55 EPSComponents SteeringGearboxOverhaul(cont'dl Special Tools Required . Locknutwrench 07ZAA-S5A0100 . Pincers,Oetiker1098or equivalent,commercially available. 4. Removethe stop plate (A).the 12 mm flange bolts (B),the O-rings(C),and the bracket(D)from the sleeringgearbox. NOTE: . Referto the ExplodedView as neededduring this procedure. . Do not allow dust, dirt, or other foreign materialsto enter into the steeringgearbox. Eemoval 1, Removethe steeringgearbox(seepage 17-b1). Disassembly 2. Unbendthe lock washer (A). -,'i. . Loosenthe locknut(A),then removethe rack guide screw (B),sprlng (C),disc washer (D),and rack g u i d e( E )f r o m t h e s t e e r i n gg e a r b o x . - -.i::..:4,.-, Holdthe bracket(A) with one wrencn, anq unscrew both tie-rod ends (B)with anotherwrench. Remove the lockwashers. 1 7-56 - :.--. ' 6. Removethe two boot bands (A)from boot (B). Compressthe boot by hand,and apply vinyl tape (C)so the boot ends stay collapsedand pulled back 8. Installthespecialtool (A) on the lock screw (B) securely.then loosenand removethe lock screw from the steeringgearboxhousing. 07zAA-S5A0r00 1 . Attachthe yoke (A) of a universalpullerto the steeringgearboxmounts with bolts.Securely clamp the yoke in a vise as shown. Do not clamp the steeringgearboxhousingin the vise. Removethe specialtool. 1 0 .Pull on the rackhousing(A)to remove it from the steeringgearboxhousing,Removethe boot {B) and s l i d e rg u i d e( C )f r o m t h e c y l i n d e r . (cont'd) 17-57 EPSComponents SteeringGearboxOverhaul(cont'd) 'll. Checkthe slider guide for damageand cracks. Using verniercalipersto measurethe thicknessof the slider guide. lf the thicknessis lessthan service l i m i t ,r e p l a c et h e s l i d e rg u i d e , -.---(fr--', Il i l ( t t f Z,-----:-r-.--------.t.t'E-r i @ r 25.3mm {0.925in.} 12 , /i\ ,))) 15. Applymultipurpose greaseto the indicated part part) of the {shaded outersurfaceof the rack housing.Do not applyto the dentsandgrooves. I | 25.3 mm {0.925in.l Removeanddiscardthestopring{A)onthe cylinderby expanding it with snapringpliers. Removeanddiscardthe lockscrew{B}. \ 13. Installthe new lock screw on the rack housing. 1 4 . I n s t a l l t h en e w s t o p r i n g i n t h e g r o o v e( C ) o nt h e cylinderby expandingit with a snap ring pliers.Be carefulnot to scratchor damagethe housing surfacewith the stop ring edges. I 17-58 16. Set the new boot bands (A) on the band installation groovesof the boot (B) by aligningthe tabs (C)with the holes (D)of the band.Do not closethe ear of the boot band in this step. 1 1 . Compressthe boot by hand,and apply vinyl tape (E)to the bellowsso the boot ends stay collapsed and pulled back. Passthe boot over the rack housingso the smaller diameterend of the boot facesthe steering gearboxhousing. '19. Pushthe rack housing(A) into the steeringgearbox housing(B) so the notch (C)is alignedwith the pin (D)on the bottom of the gearboxhousinginside 20. Tightenthe lock screw {A) by hand first, then install the specialtool (B)on the lock screw. Lightly tighten the lock screw.Do not tighten the lock screwto the specifiedtorque Yet. 1 8 .Attachthe yoke (A) of a universalpuller to the gearboxhousingmounts with bolts.then securely clamp the yoke in a vise as shown. Do not clamp the steeringgearboxhousingin a vise. 21. Removethe specialtool. (cont'd) 17-59 EPSComponents SteeringGearboxOverhaul(cont'dl 22. Apply multipurposegreaseto the sliding surface and circumferenceofthe rackguide (A),and install it onto the gearboxhousing.Wipe the greaseoff the threadedsectionofthe housrno. '1 { 25. Centerthesteeringrackwithin its stroke,and align t h e s l i d e rg u i d e( A ) w i t ht h e h o t e s( B )i n t h e b o o t ( C ) . Fit the slider guide to the boot by pressingaround the edgesof the holessecurely - .- =-1,...'. ,. ,l .j 2 3 . I n s t a l l t h ed i s cw a s h e r( B ) w i t hi t s c o n v e xs i d e f a c i n gt h e r a c kg u i d e .I n s t a l l t h es p r i n g( C ) .A p p t y sealantto the middle of the threadson the rack guide screw (D),then installand tighten it to 25 N m (2.5kgf.m, 18 lbf.ft).Looselyinstatlrhetocknut (E). 24. Apply multipurposegreaseto the sliding surfaceof the slider guide (A).Keepgreaseoff of the rack-toslider guide mating surfacesand the boot-to-slider guide mating surfaces. Slidethe steeringrack all the way to left, and place t h e s l i d e rg u i d eo n t h e s t e e r i n gr a c kb y a l i g n i n gt h e bolt holes (B). E 25 N.m 12.5kgt.m,18tbt.ft) 26. Beforeinstallingthe bracket(D),cleanthe mating surfaceofthe 12 mm flange bolts (E)and the bracket.Coatthe new O-rings{F)with multipurpose g r e a s ea, n d i n s t a l l t h e mo n t h e ' 1 2m m f l a n g eb o l t s . 27. Looselyinstallthe bracketon the steeringrack by tighteningthe 12 mm flange boltsto 25 N.m (2.5 kgf.m, 18lbf.ft). 28. Hold the gearboxhousingusing a yoke,then install the specialtoolon the lock screw (A).Retightenthe lock screwto the specifiedtorque values. A { 1 6 . 5k g t . m , 1 1 9 l b f . f t } 29. Removethe specialtool. 17-60 30, Retightenthe 12 mm flange bolts (A) to the soecifiedtoroue value. 3 4 . C l o s et h e e a r p o r t i o n( A )o f t h e b a n d s( B ) w i t h , e t i k e r1 0 9 8o r c o m m e r c i a l la v v a i l a b l ep i n c e r sO e q u i v a l e n(tC ) . 74 N.m (7.5kgf.m,5irlbf.ft) 5 t . After tighteningthe 12 mm flange bolts, installa new stop plate (B)over one of the bolt heads.Be surethe tabs (C)of the stop plate are alignedwith the flat surfacesof the bolt head. 32, Cleanoff any greaseor contaminationfrom the b o o t i n s t a l l a t i ognr o o v e so n t h e h o u s i n g . Expandthe boot (A) by removingthe vinyltape, and fit the boot ends (B) in the installationgrooves o n t h e c y l i n d e rh o u s i n g . 3 5 . I n s t a l l t h en e w l o c kw a s h e r( A )w i t h i t s r a d i u s e d side facing (B)the tie-rod (C),and screwthe tie-rod on the bracket(D).Repeatthis stepfor the other side of the tie-rod.Hold the bracketwith one wrench,and tightenthe tie-rodsto the specified torque with anotherwrench. . .,,";=-. , . , *=,,', (cont'd) 17-61 EPSComponents SteeringGearboxOverhaul(cont'dl 36. Bendthe lock washer againstthe flat spots on the bracketwitha Iarge pair of pliers. 37. Adjust the rackguide screw {seepage 17-13). 17-62 SteeringGearboxInstallation '1. Beforeinstallingthe steeringgearbox,slidethe rack all the way to the passenger'sside (right direction). 4. Insertthe pinion shaft up through the bulkhead, then slip the right side of the steeringgearbox housing(A) over the mounting stud (C)on the gearboxmounting bracket. 2 . Passthe right side of the steeringgearboxtogether with the tie-rodsthrough the wheelwell openingon the passenger'sside.Continuemoving the steering gearboxtoward the passenger'sside untilthe driver'sside tie-rodend and gearboxclearsthe mastercylinderand under-hoodfuse Ielay box. Lower the steeringgearbox.and move it toward t h e d r i v e r ' ss i d eu n t i l t h es t e e r i n gg e a r b o xi s l n Dosition. \- --' '.'', i :-1 . . . . Be carefulnot to damagethe hoses,lines and wire harnesses. 10 x '1.25mm 61 N.m {62 kgl m, 45 lb{ ftl Installthe steeringstiffenerB, and lightlytighten the steeringgearboxmounting nuts. Installthe steeringstiffenerA with the gearbox m o u n t i n gb o l t s .T h e nt i g h t e na l l t h e s t e e r i n g gearboxmounting hardwareto the specifiedtorque. 1 0x 1 . 2 5m m 6l N.m (6.2 kgt.m, 45 lbt.ft) 3 . I n s t a l l t h ep i n i o ns h a f tg r o m m e t( A ) . .: --.-{ . ( c o n t ' d) 17-63 EPSComponents SteeringGearboxInstallation(cont'd) 7. Installthebodystiffener(A),andtorquethe mountingboltsto the specified torque. 9. Reinstallthe heaterhose (A) on the hose bracket. 8 x 1.25mm 29 N.m {3.0kgf.m,22lbf.ftl 1 0 .Installthe enginewire harnessclamps (B)to the three harnessbrackets. L Installthe heatervalve (A) on the bulkhead,and connectthe heatervalve cableend (B)to the heater valve arm (C).Readjustthe heatervalve cable{see page21-46). L-t :.i.t' , 9.8N.m (1.0kgf m, 7.2tbf.ftl 17-64 ' It . Under the steeringgearbox,installthe ground cableterminal (A) on the steeringgearboxhousing. 9 . 8N . m {1.0kgf.m,7.2lbf.ft) 12. lnstalltheEPSwire harnessbracket(A)on the (B) gearboxhousing,andconnectthe 6Pconnector propefly. 9.8 N.m {1.0kgt m,7.2 lbt.ftl 1 4 . Centerthe steeringrackwithin its stroke. 1 5 . Wipe off any greasecontaminationfrom lhe ball joint taperedsectionand threads.Then reconnect the tie-rod ends 1A)tothe damper steeringarms. lnstallthe ball joint nut (B) and tighten them. ,-', ''l : 1 ) B 10x 1.25mm i€ N.m {4.4 kgf.m. 32 tbt.ftl 1 3 . I n s t a l l t h eh e a ts h i e l d( A ) . to. ,.!,.. ''6 Installthe new cotter pins (C),and bend them as shown. f (cont'd) 17-65 EPSComponents 4 SteeringGearboxInstallation(cont'dl 1 7 . Installthe motor on the steeringgearbox(seepage 17-49). 1 8 . lnstallthe steeringjoint (A).and reconnectthe steeringshaft (B) and pinion shaft (C).Make sure the steeringjoint is connectedas follows: . I n s e r t t h eu p p e r e n do f t h e s t e e r i n gj o i n t o n t o t h e steeringshaft (line up the bolt hole (D)with the flat portion (E)on the shaft). . Slip the lower end of the steeringjoint onto the pinion shaft (line up the bolt hole with the groove (F)around the shaft),and looselyinstallthe lower joint bolt. Be sure that the lower joint bolt is securelyin the groove in the pinion shaft. . Pull on the steeringjoint to make surethat the steeringjoint is fully seated.Then installthe upper joint bolt, and tighten it to the specified torque.Tightenthe lower joint bolt to the specifiedtorque. 22. After installation,performthe following checks. . Performthe front toe inspection. . C h e c kt h e s t e e r i n gw h e e ls p o k e a n g l el.f s t e e r i n g spokeanglesto the right and left are not equal (steeringwheel and rackare not centered), correctthe engagementof the joinvpinion shaft serrations,then adjustthe front toe by turning the tie-rods,if necessarv. \ 8 x '1.25mm 28 N.m {2.9kgf.m, 21 tbt.ft) 1 9 .Installthedriver's dashboardlower cover (see page 20-59)and under cover (seepage 20-60). 20. lf the steeringwheel was turned,centerthe cable reel by first rotatingit clockwiseuntil it stops.Then rotateit counterclockwise(abouttwo and half turns) untilthe arrow mark on the label points straightup. Reinstallthe steeringwheel (seepage 17-8). )1 Installthe front wheels. 17-66 EPSControlUnit Removal/ Installation Tie-rodBallJoint Boot Replacement Special Tool Required Attachment,42 mm 07OAD-P0A0100 1. Removethe passenger'sunder panel. 2. Turn up the floor carpel,removelhe EPScontrol untr. l. Removethe boot from the tie-rod end, and wipe the old greaseoff the ball pin. 2 . P a c kt h e l o w e ra r e ao f t h e b a l l p i n ( A ) w i l h f r e s h mulr purposegrease. *-4 r/\-, d______i.l+_D -6rA 3 . Disconnectthe EPScontrol unit connectors. lnstallthe EPScontrol unit in the reverseorder of removal. E After installation,startthe engine,and let it idle. Turn the steeringwheelfrom lock-to-lockseveral times. Checkthat the EPSindicatordoes not come on. 3. Packthe interiorof the new boot (B) and lip (C)with fresh multipurposegrease. Note these items when installingnew grease; . Keepgreaseoffthe boot installationsection(D) and the taperedsection(E)of the ball pin. . Do not allow dust, dirt, or other foreign materials to enterthe boot. 4. Installthe new boot (A) usingthe specialtool.The boot must not have a gap at the boot installation sections(B).After installingthe boot.checkthe ball pin taperedsectionfor greasecontamination,and wipe it if necessary. 07(lAD-P0A0100 17-67