Front Passenger Side Seat Belt Warning Light Malfunction

SEAT BELT: SEAT BELT WARNING SYSTEM: Front Passenger Side Seat Belt Warning Light Malfunction

Front Passenger Side Seat Belt Warning Light Malfunction

DESCRIPTION

The occupant classification ECU detects the state of the front seat inner belt assembly RH and load sensor when the front passenger side seat is occupied with the ignition switch ON. If the front passenger side seat belt is not fastened, the front passenger side seat belt warning light on the accessory meter assembly blinks. If the seat belt is fastened, the warning light goes off.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
- The seat belt warning system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure How To Proceed With Troubleshooting.

PROCEDURE

1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)
(a) Clear the DTC How to Proceed With Troubleshooting.
(b) Recheck for DTCs.
Result:





B -- GO TO CAN COMMUNICATION SYSTEM
A -- Continue to next step.

2. CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM)
(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Recheck for DTCs.
Result:





B -- GO TO OCCUPANT CLASSIFICATION SYSTEM
A -- Continue to next step.

3. CHECK DTC OUTPUT (AIRBAG SYSTEM)
(a) Clear the DTC DTC Check / Clear.
(b) Recheck for DTCs.
Result:





B -- GO TO AIRBAG SYSTEM
A -- Continue to next step.

4. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(e) Perform the Active Test according to the display on the Techstream.

Combination Meter (Combination Meter Assembly)





OK:
The front passenger side seat belt warning light on the accessory meter assembly operates normally.

NG -- CHECK HARNESS AND CONNECTOR (BATTERY AND BODY GROUND)
OK -- REPLACE COMBINATION METER ASSEMBLY
5. CHECK HARNESS AND CONNECTOR (BATTERY AND BODY GROUND)




(a) Disconnect the F2 connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ACCESSORY METER)




(a) Disconnect the E1 connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

7. REPLACE ACCESSORY METER ASSEMBLY
(a) Replace the accessory meter assembly Removal.
NEXT -- Continue to next step.

8. CHECK FRONT PASSENGER SIDE SEAT BELT WARNING LIGHT
(a) Check the front passenger side seat belt warning light operation On-Vehicle Inspection.

NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- END (ACCESSORY METER ASSEMBLY WAS DEFECTIVE)