SEAT BELT SEAT BELT WARNING SYSTEM(for GTMC Made) Front Passenger Side Seat Belt Warning Light does not Operate
DESCRIPTION
The combination meter assembly blinks or turns off the front passenger seat belt warning light on the combination meter assembly in accordance with the state of the front seat inner belt assembly RH and occupant detection sensor (separate type front seat cushion pad RH).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.
·When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
·When the combination meter assembly is replaced, update the ECU security key.
·The seat belt warning system uses the CAN communication system and CXPI communication system. First, confirm that there is no malfunction in the CAN communication system and CXPI communication system. Refer to the How to Proceed with Troubleshooting procedure.
- HINT:
- ·
The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat. Check that the operation of the seat belt warning light is normal first.
·If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the combination meter assembly.
PROCEDURE
Read the Data List according to the display on the GTS.
- Body Electrical > Power Distribution Box > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Passenger Seat Buckle Switch Status Front passenger side seat belt buckle switch status Set, Unset, Unknown Set: Front passenger seat belt fastened
Unset: Front passenger seat belt not fastened
Unknown: Data is not determined- Passenger Seat Occupant Sensor Status Front passenger seat occupant detection sensor status OFF, ON, Unknown OFF: Front passenger seat not occupied
ON: Front passenger seat occupied
Unknown: Data is not determined-
- Body Electrical > Power Distribution Box > Data List
-
Tester Display Passenger Seat Buckle Switch Status Passenger Seat Occupant Sensor Status - 50003 475 1400,1401
- OK:
The GTS display changes correctly in response to the front passenger seat belt and front passenger seat condition.
- Result:
Result Proceed to OK A NG (Passenger Seat Buckle Switch Status) B NG (Passenger Seat Occupant Sensor Status) C
A
B
C
for Manual Seat:
for Power Seat:
- Result:
Proceed to OK NG
OK
NG
for Manual Seat:
for Power Seat:
Disconnect the M38 front seat inner belt assembly RH connector.
Disconnect the 6F power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition M38-3 (+) - 6F-11 Always Below 1 Ω M38-2 (E) - Body ground Always Below 1 Ω M38-3 (+) or 6F-11 - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
for Manual Seat:
for Power Seat:
- Result:
Proceed to OK NG
OK
NG
for Manual Seat:
for Power Seat:
for Manual Seat:
for Power Seat:
- Result:
Proceed to OK NG
OK
NG
for Manual Seat:
for Power Seat:
Disconnect the M38 front seat inner belt assembly RH connector.
Disconnect the 6F power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition M38-5 (+) - 6F-29 Always Below 1 Ω M38-4 (E) - Body ground Always Below 1 Ω M38-5 (+) or 6F-29 - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG