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BE-209
BODY ELECTRICAL
-
CLOCK
CLOCK
BE0G0-13
TROUBLESHOOTING
HINT:
Troubleshoot the clock according to the table below.
Troubleshooting
No.
Passenger seat belt warning light does not light up.
1
Clock will not operate
1
Clock loses or gains time
2
± 1.5 seconds / day
1.
INSPECT CLOCK CIRCUIT (See page DI-1009 )
2.
TROUBLESHOOTING NO. 1
1
PASSENGER SEAT BELT WARNING LIGHT DOES NOT OPERATE
CLOCK WILL NOT OPERATE
(a) Check that the battery positive voltage is 10 - 16 V.
If voltage is not as specified, replace the battery.
(b) Check that the MPX-B and RAD No. 2 fuses are not blown.
If the fuse is blown, replace the fuse and check for short.
(c) Troubleshoot the clock as follows.
HINT:
Inspect the connector on the wire harness side.
Wire Harness Side
Clock Assembly (in A/C control assembly)
B7
RAD No. 2
ACC
Fuse
+B
PS/B
GND
B8
B5
B18
Connector ”B”
Connector ”A”
MPX-B Fuse
Passenger
Seat Occupant
Detection
Sensor
Connector ”B”
Wire Harness Side
Connector ”A”
1 2 3 4
Ground
5 6 7 8
9 10 11 1213 14 1516 17 1819 20
I11820
2005 LEXUS IS300 (RM1140U)
Author:
Date:
2213
BE-210
BODY ELECTRICAL
Is there battery positive voltage between terminal +B and
body ground?
-
CLOCK
No
+B wire harness faulty.
Yes
Is there battery positive voltage between terminal ACC and
body ground?
No
+B wire harness faulty.
Yes
Is there battery positive voltage between terminal GND and
body ground?
No
Ground wire harness faulty.
Yes
Replace clock.
3.
TROUBLESHOOTING NO. 2
2
CLOCK LOSES OR GAINS TIME
(a) Check that the battery positive voltage is 10 - 16 V.
If voltage is not as specified, replace the battery.
(b) Inspect the error of the clock.
Allowable error (per day): ± 1.5 seconds
If the error exceeds the allowable error, replace the clock.
(c) Check that the clock adjusting button is sticking in position and has failed to return.
If the error exceeds the allowable error, replace the clock.
(d) Troubleshoot the clock as follows.
HINT:
Inspect the connector on the wire harness side.
Wire Harness Side
Clock Assembly
B7
ACC
+B
PS/B
GND
B8
B5
B18
Connector ”B”
Connector ”A”
RAD No. 2
Fuse
MPX-B Fuse
Passenger
Seat Occupant
Detection
Sensor
Connector ”B”
Wire Harness Side
Connector ”A”
1 2 3 4
Ground
5 6 7 8
9 10 11 1213 14 1516 17 1819 20
I11820
2005 LEXUS IS300 (RM1140U)
Author:
Date:
2214
BE-21 1
BODY ELECTRICAL
Is there battery positive voltage between terminal +B and
body ground?
-
CLOCK
Bellow 10 V
Locate cause and repair, or recharge battery.
Bellow 10 V
Locate cause and repair, or recharge battery.
Yes
Is there battery positive voltage between terminal ACC and
body ground?
Yes
Adjust or replace clock.
2005 LEXUS IS300 (RM1140U)
Author:
Date:
2215