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SUBARU,
APPLlCABlLlTY
SUBJECT
1995 AND 1996 LEGACY SERVICE MANUALS
SERVICE MANUAL CORRECTIONS
Please replace the pages of the following service manuals and service manual supplements using the chart
below.
1995 Service Manual
MSA5T9406A
Volume 1
Page:
T3C2,2-7,31
1996 Service Manual
MSA5T9602A
Volume 4
Page:
01000, 1-6,2
1996 Service Manual
MSA5T9602A
Volume 4
Page:
SlA1,3-4,2
1996 Service Manual
MSA5T9602A
Volume 4
Page:
T3C6,2-7,35
1996 Service Manual
MSA5T9602A
Volume 4
Page:
T503,2-7,73
1996 Service Manual
MSA5T9602A
Volume 4
Page:
T8C2,2-7,97
1996 Service Manual
MSA5T9602A
Volume 4
Page:
T8D4,2-7,102
1996 Service Manual
MSA5T9602A
Volume 4
Page:
T8D6,2-7, 103
1996 Service Manual
MSA5T9602A
Volume 4
Page:
TlOD2,2-7,133
1996 Service Manual
MSA5T9602A
Volume 4
Page:
TlOM1,2-7,170
1996 Service Manual
MSA5T9602A
Volume 4
Page:
TlOT4,2-7, 190
1996 Service Manual
MSA5T9602A
Volume 4
Page:
TlOAIO, 2-7,240
1996 Service Manual
MSA5T9602A
Volume 4
Page:
TlOAJO, 2-7,242
Page:
TlOAU5,2-7,269
-
1996 Service Manual
I MSA5T9602A I
Volume 4
I
I
I
I
1996 Service Manual Supplement
MSA5T9607A
Volume 5
Page:
TlOBS2,2-7,65
1996 Service Manual Supplement
(Enhanced Evaporative Emission
Control Equipped Model) - Located
in the second half of Volume 5
MSA5T9607A
Volume 5
Page:
TlOBXl, 2-7,91
CA UTI0N
VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intendedfor use by prolessionaltechnicians ONLY. They are written to inlOrm those technicians of conditions that may occur in some vehicles, or to provide Informationthat could assist
in the proper servicing of the vehicle. Properly trained technicians have the equipment,toois, Safety inStrUCtiOnS.and know-howto do the JobCOrreCtlY and safely. If a conditionis described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.
ON-BOARD DIAGNOSTICS II SYSTEM
Contents
Function mode
[T3C2]
2-7
Abbreviation
Unit of measure
kPa
F49
Intake manifold absolute pressure signal
MANI. P
F50
Load data (Freeze frame data)
LOAD-F
Yo
~
~~~
I
F51
Engine coolant temperature signal (Freeze frame data)
TW-F
‘C
F52
Short term fuel trim (Freeze frame data)
ALPH-F
Yo
F53
Long term fuel trim (Freeze frame data)
KBLR-F
%
F54
Intake manifold absolute pressure signal (Freeze frame
data) <AT vehicles>
F55
Engine speed signal (Freeze frame data)
EREV-F
rpm
F56
Vehicle speed signal (Freeze frame data)
VSP-F
km/h
FA0
ON H OFF signal
-
FA 1
ON H OFF sianal
-
I
I
MANI-F
kPa
~~~~
FA3
ON
OFF signal
-
FA4
ON H OFF signal
-
-
FBO
Diagnostic trouble code (DTC)
INSPECT
-
FB1
Diagnostic trouble code (DTC)
OBD
FCO
Clear memory
FA2
I ON
++
I
OFF signal
~~
c)
I
~~
~~~
I
-
-
105
iA
- 9’Revised
a- 0I,
Y6
2-7
ON-BOARD DIAGNOSTICS II SYSTEM
[T~C~I
3. Diagnosis System
FUNCTION MODE: FOO
- ROM ID NUMBER (YEAR)
0
1995
-
CONDITION:
Ignition switch "ON"
2.2
SPECIFIED DATA:
Presentat ion display
SOHC
OBD0065
-1
1
1. Error 1
Check for loose or disconnected connector, and
discontinued circuit, etc.
0
FUNCTION MODE: FO1
- BATTERY VOLTAGE (VB) (FO1)
VB
CONDITION:
(1) Ignition switch "ON"
(2) Idling after warm-up
12.4 V
82M0270
0
SPECIFIED DATA:
(1) l l f l v
(2) 1 3 f l V
Probable cause (Item outside "specified data")
+
r
Check battery voltage and electrolyte's specific
gravity.
0
Check regulating voltage. (On no-load)
Check alternator.
0
Check main relay. <Ref. to [TgCO]. >
0
~
3. Power supply line
~
r
106
1/4-24
SPECIAL TOOLS
1-6
Page
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Engine Tools .....................................................................
Manual Transmission and Differential Tools
Automatic Transmission and Differential Tools
Rear Differential Tools (AWD Models)
Suspension Tools
Wheels and Axles Tools
Steering System Tools
Brake Tools
Body Tools
Supplemental Restraint System Tools
Select Monitor and Cartridge ................................................
107
2
2
1-6
SPECIAL TOOLS
WOO1
1. Enaine Tools / 11. Select Monitor and Cartridge
1. Engine Tools
498267600 ‘
498747300
499207300
WRENCH
0 Used to remove and install
lastic camshaft sprocket.
0 For DOHC engine.
CYLINDER HEAD TABLE
PISTON GUIDE
B
B
Used to install piston in cylinder.
For 2500 cc engine.
L
For replacing valve uides.
used to remove antinstall
valve springs.
o For DOHC engine.
o
GlH0132
‘Newly adopted tool
.
11 Select Monitor and Cartridge
498345700
CARTRIDGE
Troubleshooting for electrical
systems.
I
GlH0288
I
‘Newly adopted tool
108
GlH0371
498267700
VALVE GUIDE ADJUSTER
Used to install intake and
exhaust valve quides.
For DOHC engine.
GlH0143
AWD SYSTEM
~
3-4
~~
Page
S SPECIFICATIONS AND SERVICE DATA ..................................................... 2
1. AWD System ............................................................................................
2
C COMPONENT PARTS .................................................................................. 3
1. Rear Differential Mounting System ........................................................ 3
2. Propeller Shaft
3. Rear Differential Assembly
W SERVICE PROCEDURE
1. Propeller Shaft
2. Rear Differential
3. Rear Differential Front Member
K DIAGNOSTICS
1. Rear Differential
2. Propeller Shaft
109
6-2 [W2164]
21. Cruise Control
SERVICE PROCEDURE
3) Remove nuts which secure actuator.
4) Remove actuator while disconnecting vacuum hose.
Tightening torque:
7.4 f7.5 N.m (0.75 f0.75 kg-m, 5.4 f 1.7 ft-l6)
4. VACUUM PUMP AND VALVES
1) Disconnect connector from vacuum pump.
2) Remove bolts which secure vacuum pump.
3) Remove A/C receiverldrier bracket.
4) Remove vacuum pump while disconnecting vacuum
hose.
Tightening torque:
7.4f 7.5 N.m (0.75 f0.75 kg-m, 5.4 f1.7 ft-16)
I
B6M0359P
5. STOP AND BRAKE SWITCH
Refer to 4-5 [CIOI (MT) or C201 (AT)] as for removal and
installation of stop and brake switch.
6. CLUTCH SWITCH (MT)
Refer to 4-5 [CIOI] as for removal and installation of
clutch switch.
7. INHIBITOR SWITCH (AT)
Refer to 3-2 [W4A4] as for removal and installation of
in hibit or switch.
B6M0360A
Revised 2/21/96
8. CRUISE CONTROL MODULE
1) Follow the same preparatory procedures when removing door lock timer. <Ref. to 6-2 [W17A2].*1 >
2) Remove nuts which secure cruise control module, and
remove cruise control module from bracket while pulling
right side lower end of instrument panel.
CAUTION:
Be careful not to damage instrument panel while pulling its right side lower end.
3) Disconnect connector from cruise control module.
4) Installation is the reverse order of removal.
100
ON-BOARD DIAGNOSTICS II SYSTEM
Function mode
FB1
Contents
Diasnostic trouble code (DTC)
I
Load data (Freeze frame data)
Engine coolant temperature signal (Freeze frame data)
Short term fuel trim (Freeze frame data1
FB2
Long term fuel trim (Freeze frame data)
Intake manifold absolute pressure signal (Freeze frame
data)
1
LOAD-F
I
“C
ALPH-F
%
KBLR-F
I
YO
TW-F
I
I
rPm
Vehicle speed signal (Freeze frame data)
VSP-F
kmlh
Mass air flow signal (Freeze frame data)
QA-F (POlOO)
V
I
PS-F (P0105)
I
PR-F (P0106)
V
Engine coolant temperature signal (Freeze frame data)
TW-F (PO115)
V
Throttle position signal (Freeze frame data)
THV-F (PO120)
V
EGR control solenoid valve signal (Freeze frame data)
<AT vehicles >
I
EGR (P0403)
-*
1
CPC (P0443)
-*
1
STSW (P1100)
-*
1
-*
1
-
Pressure sources switching solenoid valve signal
(Freeze frame data)
1
Radiator fan relay 1 signal (Freeze frame data)
1
BR1 (P1102)
1
FAN1 (P1500)
I
-
FUEL PUMP
-
CPCSOL
-
1
Compulsory radiator fan relay operation check
1
RADFAN
1
ComDulsorv AIC relav ooeration check
I
AIC RELAY
I
FD05
Compulsory EGR control solenoid valve operation
check
FDlO
Compulsory pressure sources switching solenoid valve
operation check
-~
I
--‘1
-
Compulsory purge control solenoid valve operation
check
I
I
I
V
Pressure signal (Freeze frame data)
Compulsory fuel pump relay operation check
’
-
EREV-F
Clear memory
I
I
OBD
Engine speed signal (Freeze frame data)
Start switch sianal (Freeze frame data)
FD02
Unit of measure
kPa
Purge control solenoid valve signal (Freeze frame data)
I
Abbreviation
MANI-F
Pressure sianal (Freeze frame data)
FB3
I
r 3 C 6 ] 2-7
3. Diagnosis System
EGRSOL
I
-
BR SOL
~~
I
II
I
I
I
NOTE:
1) Subaru select monitor is also available for monitoring
information other than that used for check and repair of
the vehicle.
2) F42 (Maximum and minimum EGR system pressure
value) will not read accurately until the EGR flow diagnosis terminates.
EGR flow diagnosis terminates when LED No. 2 illuminates
at function mode FA4.
3) *1: ”Hi” or “Low” is shown instead of measured value.
4) Because valve is not installed, FD06, FD07, FD08, FD09
and F D l l will be displayed but non-functional.
111
I R-33- Q L 4
8
Revised 7/96
2-7
ON-BOARD DIAGNOSTICS II SYSTEM
[T3C7]
3. Diagnosis System
7. FUNCTION MODE: FOO
- ROM ID NUMBER (YEAR)
CONDITION:
Ignition switch "ON"
1996
2.2
-
SPECIFIED DATA:
Presentation display
SOHC
B2M047C
~
0
~~
~
Probable cause (Item outside "specified data")
I
I
,
I
1. Error 1
4.
Check for loose or disconnected connector, and
discontinued circuit, etc.
Check for poor contact of cartridge, or different
type cartridge.
8. FUNCTION MODE: FO1
- BATTERY VOLTAGE (VB) -
VB
CONDITION:
(1) Ignition switch "ON"
(2) Idling after warm-up
1
12.4 V
SPECIFIED DATA:
(1) l l f l v
(2) 13f:
82M0270
0
Probable cause (Item outside "specified data")
1. Battery
I
~
4.
Check battery voltage and electrolyte's specific
gravity.
0
0
Check main relay. <Ref. to [T8CO].>
Check harness connector of ECM power supply
line. <Ref. to [TBCO]. >
0
~
0
112
Check regulating voltage. (On no-load)
Check alternator.
ON-BOARD DIAGNOSTICS II SYSTEM
[T503]
2-7
5. Specified Data
Content
Connector
No.
Terminal
No.
Measuring conditions
Voltage
Throttle fully closed.
Throttle fully open.
0.3 - 0.7
4.3 - 4.9
Throttle position
sensor
854
8
Throttle position
sensor power
856
19
854
10
..
.
SUDD~V
ATF temperature
sensor
Vehicle speed
sensor 1
Vehicle speed
sensor 2
Engine speed
signal
I"l
Ignition switch ON (with engine
OFF)
-
4.8
Vehicle stormed.
..
Vehicle speed at least 20 kmlh (12
MPHI
- 5.3
2.1 k - 2.9 k
275 - 375
450 - 720
More than 1 (AC range)
When vehicle is slowly moved at
least 2 meters (7ft).
Ignition switch ON (with engine
Less than 1-More
-
than 9
More than 10.5
nee\
urrl.
Ignition switch ON (with engine ON).
When cruise control is set (SET
lamp
. ON)..
When cruise control is not set (SET
lamp OFF).
Cruise set signal
-
2.9 - 4.0
1.0 - 1.4
0
ATF temperature 20'C (68'F)
ATF temperature 80°C (176'F)
j
12
854
Resistance to
bodv
(ohms)
,,,,
-
8-11
Less than 1
-
More than 6.5
Torque control
signal
Mass air flow
signal
855
16
Ignition switch ON
B54
9
Engine idling after warm-up
Shift solenoid 1
855
14
1st or 4th gear
2nd or 3rd gear
More than 9
Less than 1
20 - 32
Shift solenoid 2
855
13
More than 9
Less than 1
20 - 32
Shift solenoid 3
855
15
1st or 2nd gear
3rd or 4th gear
Selector lever in "N" range (with
throttle fully closed).
Selector lever in "D" range (with
throttle fully closed).
Throttle fully closed (with engine
OFF) after warm-up.
Throttle fully open (with engine
OFF) after warm-up.
Throttle fully closed (with engine
OFF) after warm-up.
Throttle fully open (with engine
OFF) after warm-up.
Duty solenoid A
Dropping resistor
-I
855
7
Duty solenoid 8
Duty solenoid C
(AWD model only)
3
855
When lock up occurs.
When lock up is released.
Fuse on FWD switch
Fuse removed from FWD switch
(with throttle fully open and with
select lever in ist oearl.
-
4-6
0.5
- 1.2
-
Less than 1
20 - 32
More than 9
1.5 - 4.0
1.5 - 4.5
Less than 1
5-
14
12 - 18
Less than 0.5
More than 8.5
Less than 0.5
More than 8.5
II
9-17
I
Less than 0.5
9-17
I
Sensor ground
line 1
-
I
0
I
Less than 1
Sensor ground
line 2
-
I
0
I
Less than 1
0
I
Less than 1
System ground
lipe
Power system
ground line
FWD switch (AWD
model only)
Data link signal
(Subaru select
monitor)
AT diagnosis
signal
856
856
1
2
-
0
Less than 1
Fuse removed.
Fuse installed.
6 - 9.1
Less than 1
-
-
-
-
Ignition switch ON
Less than 1
-
More than 4
113
-
Revised 7/96
1P-m-
tA
2-7 [T600]
ON-BOARD
6. Basic Diagnostics Procedure
DIAGNOSTICS II SYSTEM
6. Basic Diagnostics Procedure
I
Trouble occurs.
4
I
Ask the customer when and how
the trouble occurred using interview check list. <Ref. to
[T602).*2 >
Start the engine.
5
Malfunction indicator lamp (MIL)
illuminates.
1Yes
I InsDection usina Subaru select
monitor or O B ~ I general
I
scan
tool. (Subaru select monitor: MODE
FB1)
Inspection using "8. Diagnostics
for Engine Start Failure [T800]"*2.
5
Inspection using "9. General Diagnostics Table [T900]"*2.
I
I
I
b
Repair.
See NOTE: '1
No trouble code designated.
Trouble code
designated.
Inspection using "10. Diagnostics
Chart with Trouble Code
[ T l OAOI"02.
See NOTE: '2.
I
r
I
+-I
T
Trouble code
designated.
I
Repair
I
f
InsDection mode
Inspection using Subaru select
monitor or OED-ll general scan
tool. (Subaru select monitor: MODE
I
I
Clear memory mode.
1
No trouble code
designated.
NOTE:
*1: If trouble code is not shown on display although the
MIL illuminates, perform diagnostics of the MIL (CHECK
ENGINE LIGHT) circuit or combination meter. <Refer to
"7. Diagnostics for CHECK ENGINE Malfunction Indicator
Lamp (MIL) [T700]."*2 >
*2: Carry out the basic check, only when trouble code
about automatic transmission is shown on display. < Ref.
to [T601].*2 >
114
ON-BOARD DIAGNOSTICS II SYSTEM
[T8C2]
2-7
8. Diagnostics for Engine Starting Failure
8C1
CHECK MAIN RELAY.
G2M0444
: GO to next @
@ : Replace main relay.
: Terminals
W
NO. 4
NO. 6:
Is the resistance less than 10 SZ?
@ : G
o to step 8C2.
@ : Replace main relay.
a
18~2
-
CHECK POWER SUPPLY C
I
R
C
U
1) Install main relay.
2) Disconnect connectors from ECM.
3) Turn ignition switch to ON.
4) Measure power supply voltage between ECM connector terminals.
@ : Connector & terminal
(684) NO. 1 (+) - NO. 19 (-):
Is the voltage more than 10 V?
: GO to next
.
@ : Repair harness of power supply circuit.
@ : Connector & terminal
(684) NO. 2 ( + )
NO. 19 (-):
Is the voltage more than 10 V?
@ : GO to next @+
.
: Repair harness of power supply circuit
; Connector & terminal
(684) NO. 39 (+) - NO. 19 (-):
Is the voltage more than 10 V?
@ : Go to step 8C3.
@ : Repair harness of power supply circuit
-
BZM0520A
115
lQ-40
Revised 7/96
n/
1-3
~
ON-BOARD
[T8C3]
8. Diagnostics for Engine Starting Failure
2-7
DIAGNOSTICS II SYSTEM
8C3
//
CHECK GROUND CIRCUIT OF ECM.
I1 I
T- a : GO to next @ .
@ : Repair harness between ECM connector and
engine grounding terminal.
@ ; Connector
rn
terminal
(B84) No. 18
Chassis ground:
Is the resistance less than 5 R?
: GO to next @
@ : Repair harness between ECM connector and
engine grounding terminal.
@+
: Connector & terminal
(884) No. 19 - Chassis ground:
Is the resistance less than 5 R?
: GO to next
: Repair harness between ECM connector and
engine grounding terminal
@ : Connector & terminal
(B84) No. 20 - Chassis ground:
Is the resistance less than 5 Q?
@ : GO to next @ .
@ : Repair harness between ECM connector and
engine grounding terminal.
a
82M0521i
I
e
a
m
I
@
a
-
Connector terminal
(884) No. 42 - Chassis ground;
Is the resistance less than 5 Q?
: GO to next @ .
: Repair harness between ECM connector and
engine grounding terminal.
;
@
; Connector
& terminal
(B84) No. 46 - Chassis ground:
Is the resistance less than 5 R?
@ : GO to next
.
: Repair harness between ECM connector and
engine grounding terminal.
@ : Connector & terminal
(884) No. 69 - Chassis ground:
Is the resistance less than 5 SZ?
e
m
a:
e
to next
: Repair harness between ECM connector and
engine grounding terminal.
GO
ON-BOARD DIAGNOSTICS II SYSTEM
[T803] 2-7
8. Diagnostics for Engine Starting Failure
8D1
CHECK IGNITION SYSTEM FOR SPARKS.
Does spark occur at each cylinder?
: Check fuel pump system. <Ref
[T8E0].62 >
: Go to step 8D2.
*.
I
to
2-7
I
8D2
CHECK POWER SUPPLY CIRCUIT FOR IGNITION COIL.
8D3
CHECK IGNITION COIL.
OBD0123A
OBDO12d
2-7 [T8D4]
ON-BOARD
8. Diagnostics for Engine Starting Failure
DIAGNOSTICS II SYSTEM
@ : Terminals
NO. 2 - NO. 3:
Is the resistance between 0.4 and 7.0
: Replace ignition coil.
@ : G
o to next step 2).
B
R?
2) Measure resistance between spark plug cord contact
portions to check secondary coil.
@ : Terminals
#1
#2:
Is the resistance between 78 and 24 R?
: GO to next @
@ : Replace ignition coil.
@ ; Terminals
#3
#4:
Is the resistance between 18 and 24 R?
@ : Go to step 8D4.
: Replace ignition coil.
-
-
OBD0126b
CHECK HARNESS BETWEEN
IGNITION COIL CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from ignitor.
3) Measure resistance of harness between
ignition coil and ignitor connector.
@ : Connector 8 terminal
(673) NO. 5 - (€12) NO. 1:
Is the resistance less than 7 R?
: GO to next @ .
@ : Go to next
.
@ ; Connector & terminal
(613) NO. 6
(€72) NO. 3:
Is the resistance less than 1 R?
: Go to step 805.
.
: GO to next
a
-
a
a
Revised 7/96
118
ON-BOARD DIAGNOSTICS II SYSTEM
[T8D6] 2-7
8. Diagnostics for Engine Starting Failure
: Is there poor contact in coupling connector
(822)?
@ : Repair poor contact in coupling connector.
@i7~
: Repair harness between ignition coil and ignitor
connector.
[8D5
I
ICHECK INPUT SIGNAL FOR IGNITOR.
1) Connect connector to ignitor.
2) Check if voltage varies synchronously with engine spe
when cranking, while monitoring voltage between ignitor
connector and engine ground.
@ ; Connector & terminal:
(873) No. 7 (+) Engine ground (-);
Is the voltage more than 70 V?
: GO to next @
: Replace ignitor.
@ ; Connector terminal:
(013) No. 2 (+)
Engine ground (-);
Is the voltage more than 70 V?
@ : Go to step 8D6.
@ : Replace ignitor.
-
-
Vm
82M02241
CHECK HARNESS OF IGNITOR GROUND
CIRCUIT.
8D6
08D0128/
119
Revised 7/96
IR- JQ-
oi- If&
2-7
[T8D7]
ON-BOARD
8. Diagnostics for Engine Starting Failure
DIAGNOSTICS II SYSTEM
CHECK HARNESS BETWEEN ECM AND
IGNITOR CONNECTOR.
1) Disconnect connector from ECM.
2) Measure resistance of harness connector between
ECM and ignitor.
@ ; Connector & terminal
(B84) NO. 41
(B73) NO. 1:
Is the resistance less than 1 R?
: GO to next GGb
@ : Repair open circuit in harness between ECM and
ignitor connector.
; Connector & terminal
(B84) NO. 40 - (B13) NO. 2:
Is the resistance less than 1 R?
: GO to next @
@ : : Repair open circuit in harness between ECM
and ignitor connector.
@ ; Connector & terminal
(B84) NO. 94 - (B13) NO. 3:
Is the resistance less than 1 R?
@ : Repair open circuit in harness between ECM and
ignitor connector.
@ : Go to next step 3).
8 ~ 7
-
IJJ
B2M0523P
e
3) Measure resistance of harness connector between
ECM and chassis ground.
: Connector & terminal
(B84) No. 41 - Chassis ground:
Is the resistance more than 1 MR?
@ : GO to next
@ : Repair short circuit in harness between ECM and
ignitor connector.
@ ; Connector ?i terminal
(B84) No. 40
Chassis ground:
Is the resistance more than 1 MR?
: GO to next @
@ : Repair short circuit in harness between ECM and
ignitor connector.
@ ; IS there poor contact in ECM connector?
@ : Repair poor contact in ECM connector.
@ : Check fuel pump circuit. <Ref. to 2-7
[T8E0].*2 >
e
e
B2M0524P
-
ON-BOARD DIAGNOSTICS II SYSTEM
[T10D2] 2-7
10. Diagnostics Chart with Trouble Code
m
N
--
102
82M0535A
m
N
kE?A
N
CHECK INPUT SIGNAL FOR E C M ~ U S I N G
VOLTAGE METER AND SUBARU SELECT
MONITOR.)
@ : G o to next step 2).
@ : Go to next @
@ : Does the voltage change more than 4.5
W by
shaking harness and connector of ECM while
monitoring the value with voltage meter?
: Repair poor contact in ECM connector.
@ : Replace ECM.
82M0535A
m
2) Measure voltage between ECM and chassis ground
@ ; Connector & teiminal
(684) No. 26 (+)
Chassis ground (-):
Is the voltage less than 0.2 W?
@ : Go to step 1OD3.
@ : Go to next step 3).
-
BARQ.P
(F20)
1 0 OkPa752mmHg
82M0755
3) Read data on Subaru Select Monitor.
0 Subaru Select Monitor
Designate mode using function key.
Function mode: F20
0 F20: Display shows pressure signal value sent from
pressure sensor.
@ ; Does the value change more than 0 &Pa by
shaking harness and connector of ECM while
monitoring the value with Subaru select
monltor?
121
Revised 7/96
I Q -r10- of.
ON-BOARD
[T10D3]
10. Diagnostics Chart with Trouble Code
2-7
DIAGNOSTICS II SYSTEM
@ : Repair poor contact in ECM connector.
@ : Go to step 1OD3.
CHECK HARNESS BETWEEN ECM AND
loD3
PRESSURE SENSOR CONNECTOR.
I
OBD0693P
@
f
5) Turn ignition switch to OFF.
6) Disconnect connector from ECM.
7) Measure resistance of harness between ECM and pressure sensor connector.
@ ; Connector & terminal
( 8 8 4 ) NO. 26 - ( 8 2 ) NO. 2:
Is the resistance less than 1 R?
@ : GO to next
.
@ : Repair open circuit in harness between ECh, and
pressure sensor connector.
@ ; Connector & terminal
(884) NO. 20
( 8 2 ) NO. 1;
Is the resistance less than 1 R?
@ : Go to next step 8).
@ : Repair open circuit in harness between ECM and
pressure sensor connector.
I
- -
B2M0537A
-
122
[TlOMO] 2-7
10. Diagnostics Chart with Trouble Code
ON-BOARD DIAGNOSTICS II SYSTEM
WIRING DIAGRAM:
cc Cal.model)
Rear oxygen sensor
(2200cc Cal.model only)
B2M078
123
2-7
[TlOMl]
ON-BOARD
10. Diaanostics Chart with Trouble Code
DIAGNOSTICS II SYSTEM
10M1
CHECK DTC PO130 ON DISPLAY.
10M2
CHECK FAILURE CAUSE OF P0130.
@ : Is the failure cause of PO130 in the fuel system?
: Check fuel system.
NOTE:
In this case, it is not necessary to inspect DTC P0136.
@:G
o to step 10M3.
10M3
CHECK REAR OXYGEN SENSOR DATA.
OBD0145A
.
5) Read data on Subaru Select Monitor or OBD-II general
scan tool.
0 Subaru Select Monitor
Designate mode using function key.
Function mode: F13
0 F13: Rear oxygen sensor output signal is indicated.
@ : Does the value fluctuate in function mode
F1??
R02
0.60 V
B2M048E
a
: Go to .+ep 10M5.
: GO to next @
124
Revised 7/96
Ji
ON-BOARD DIAGNOSTICS II SYSTEM
[T10T3] 2-7
10. Diagnostics Chart with Trouble Code
: IS there poor contact in ECM connector?
@ : Repair poor contact in ECM connector.
: Replace ECM.
a
c
OBD0713A
CHECK HARNESS BETWEEN FUEL INJECTOR AND ECM CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from fuel injector on faulty cylinders.
3) Measure voltage between ECM connector and engine
ground on faulty cylinders.
@ : Connector & terminal
#7 (€5) No. 7
Engine ground:
#2 (€76) No. 7
Engine ground:
#3 (€6) No. 7
Engine ground:
#4 (€77) No. 7 - Engine ground:
Is the resistance less than 70 R?
@ : Repair short circuit in harness between fuel injector and ECM connector.
: Go to next step 4).
-
4) Measure resistance ,pf harness connector between
ECM connector and fuel injector on faulty cylinders.
@ : Connector terminal
#7 (B84) NO. 96 - (€5) NO. 7:
#2 (B84) NO. 70 - (€76) NO. 7:
#3 (B84) NO. 44 - (€6) NO. 7:
#4 (884) NO. 76
(€77) NO. 7:
Is the resistance less than 7 R?
@ : Go to step 10T4.
: Repair open circuit in harness between ECM and
fuel injector connector.
-
U
I
G9
125
2-7
[T10T4]
ON-BOARD
10. Diagnostics Chart with Trouble Code
DIAGNOSTICS II SYSTEM
10~4
CHECK FUEL INJECTOR.
Measure resistance between fuel injector terminals on
faulty cylinder.
@ ; Terminals
NO. 1 - NO. 2:
Is the resistance between 5 and 20 a?
@ : Replace faulty fuel injector.
: Go to step 10T5.
10T5
m
CHECK POWER SUPPLY LINE.
OBD0715P
.
I
126
Revised 7/96
[TlOAH5] 2-7
10. Diagnostics Chart with Trouble Code
ON-BOARD DIAGNOSTICS II SYSTEM
@
@
@
& terminal
(884) No. 14
Chassis ground:
Is the resistance less than 70 SZ?
: Repair short circuit in harness between ECM and
idle air control solenoid valve connector.
: Go to next
.
; Is there poor contact in idle air control solenoid valve connector?
: Repair poor contact in idle air control solenoid
valve connector.
: Contact with SOA service.
; Connector
e
@
-
e
@
NOTE:
Inspection by DTM is required, because probable cause is
deterioration of multiple parts.
127
2-7
ON-BOARD
[TlOAIO]
10. Diagnostics Chart with Trouble Code
DIAGNOSTICS II SYSTEM
Al: DTC PO506
- IDLE CONTROL SYSTEM RPM LOWER
OBD
PO506
THAN EXPECTED (ISC-LOW)-
<ISC-LOW>
080037(
DTC DETECTING CONDITION:
0 Two consecutive trips with fault
TROUBLE SYMPTOM:
0 Engine is difficult to start.
0 Engine does not start.
0 Erroneous idling
0 Engine stalls.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
< Ref. to 2-7 [T3DO] and [T3E0].*2 >
Revised 7/96
128
[T10A12] 2-7
10. Diagnostics Chart with Trouble Code
ON-BOARD DIAGNOSTICS II SYSTEM
1OAll
129
CHECK DTC PO505 ON DISPLAY.
2-7
[TlOAJO]
ON-BOARD
10. Diagnostics Chart with Trouble Code
DIAGNOSTICS II SYSTEM
AJ: DTC PO507
IDLE CONTROL SYSTEM RPM HIGHER
THAN EXPECTED (ISGH1)-
PO507
<ISC-HI>
OBD0371
10AJ1
DTC DETECTING CONDITION:
0 Two consecutive trips with fault
TROUBLE SYMPTOM:
0 Engine keeps running at higher revolution than specified idling revolution.
Check DTC PO505 on display.
I 10AJ2 I Check air Intake system.
I
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
< Ref. to 2-7 [T3DO] and [T3EO].$r2 >
Revised 7/96
130
[TlOAUS] 2-7
10. Diagnostics Chart with Trouble Code
ON-BOARD DIAGNOSTICS II SYSTEM
I
@
CHECK THROTTLE POSITION SENSOR CIRCUIT.
:Is there any trouble in throttle position sensor circuit?
I
J
NOTE:
For the diagnostic procedure on throttle position sensor
circuit, refer to 3-2 [T7L0]*1.
@ : Repair or replace throttle position sensor circuit.
: Go to step 10AU3.
a
CHECK VEHICLE SPEED SENSOR 1 CIRCUIT.
J
: Repair or replace vehicle speed sensor 1 circuit.
: Go to step 1OAU4.
II
cum.
@
CHECK VEHICLE SPEED SENSOR 2 CIR1 0 ~ ~ 4
;Is there any trouble in vehicle speed sensor
2 circuit?
NOTE:
For the diagnostic procedure on vehicle speed sensor 2
circuit, refer to 3-2 [T7NO]*l.
10AU5
'
CHECK ENGWE SPEED INPUT CIRCUIT.
: Repair or replace engine speed input circuit.
@ : GO to next @ .
:Is there poor contact in TCM connector?
W
@ : Repair poor contact in TCM connector.
@ : Go to next @
@ : Is there any mechanical trouble in automatic
transmission?
@ : Repair or replace automatic transmission.
@ : Replace TCM.
a
131
Revised 7/96
mG9-%"
-2
2-7
[TlOAVO]
ON-BOARD
10. Diagnostics Chart with Trouble Code
DlAGNOSTfCS II SYSTEM
AV: DTC PO740
- TORQUE CONVERTER CLUTCH SYSTEM
MALFUNCTION (ATLU - F) DTC DETECTING CONDITION:
0 Two consecutive trips with fault
PO740 <ATLU-F>
B2M0661
1
1
1
10AV3
-1
Check any other DTC (besides DTC
lOAVl
10AV2
TROUBLE SYMPTOM:
0 No lock-up (after engine warm-up)
0 No shift or excessive tight corner "braking"
P0740) on display.
+
I
Check duty solenoid B circuit. <Ref. to
3-2 [T7BO].*l >
I
Check throttle position sensor
<Ref. to 3-2 [T7L0].*1 >
Check vehicle speed sensor 1 circuit.
loAV4
<Ref. to 3-2 [T7M0].*1>
1
10AV5
I
Check vehicle speed sensor 2 circuit.
<Ref. to 3-2 [T7N0].*1 >
1
1
Check engine speed input circuit. <Ref.
to 3-2 [T7lO].*l>
i
1
i
1OAV7
Check inhibitor switch circuit. <Ref. to
AN: DTC P0705, 2-7 [TlOAN0].*2 >
1OAV8
Check brake light switch circuit. <Ref. to
AM: DTC P0703, 2-7 [TlOAM0].*2>
?
r
1OAV9
1
1
Check ATF temperature sensor circuit.
<Ref. to 3-2 [T7GO].61>
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
< Ref. to 2-7 [T3DO] and [T3E0].*2>
ON-BOARD DIAGNOSTICS II SYSTEM
plOBS21 2-7
10. Diagnostics Chart with Trouble Code
10BS2
CHECK INPUT SIGNAL FOR ECM. (USING
VOLTAGE METER AND SUBARU SELECT
MONITOR.)
@ ; Does the voltage change more than 4.5
V by
shaking harness and connector of ECM while
monitoring the value with voltage meter?
@ : Repair poor contact in ECM connector.
@ : Replace ECM.
--
B2M0535E
2) Measure voltage be,tween ECM and chassis ground.
: Connector terminal
(884) No. 4 (+)
Chassis ground (-);
Is the voltage less than 0.2 V?
@ : Go to step 10BS3.
@ : Go to next step 3).
i
-
H2M13748
TNKP
P43)
0. lOkPa
lmmHg
3) Read data on Subaru Select Monitor.
0 Subaru Select Monitor
Designate mode using function key.
Function mode: F43
0 F43: Display shows pressure signal value sent from fuel
tank pressure sensor.
133
Revised 7/96
lA-d%-(%in-
3
2-7
[TlOBSB]
ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code
; Does
the value change more than -2.8 kPa
by shaking harness and connector of ECM
while monitoring the value with Subaru
select monitor?
: Repair poor contact in ECM connector.
@ : Go to step 10BS3.
=
CHECK HARNESS BETWEEN ECM AND
FUEL TANK PRESSURE SENSOR CONNECTOR.
1) Turn ignition switch to OFF.
2) Detach right side trunk side trim panel (Sedan) or right
side rear quarter trim panel (Wagon).
3) Remove right side rear quarter trim pocket (Wagon
model only).
4) Detach right side rear quarter insulator (Wagon model
only).
1OBS3
I
5) Disconnect connector from fuel tank pressure sensor.
6) Turn ignition switch t'd ON.
7) Measure voltage between fuel tank pressure sensor
connector and chassis ground.
@ : Connector & terminal
(R47) No. 3 (+) - Chassis ground (-);
Is the voltage more than 4.5 V?
: Go to next step 8).
@ : Repair harness and connector.
NOTE:
In this case, repair the following:
0 Open circuit in harness between ECM and fuel tank
pressure sensor connector
0 Poor contact in coupling connector (B97)
=
H2M12551
134
[TlOBXl] 2-7
10. Diagnostics Chart with Trouble Code
ON-BOARD DIAGNOSTICS II SYSTEM
~
106x1
135
~
CHECK DTC P1402 ON DISPLAY.
Revised 7/96
/R2?Q.- 91,
2-7
ON-BOARD DIAGNOSTICS II SYSTEM
MEMO:
136