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

W/ Multi-display:
The No. 1 meter ECU detects the state of the front seat inner belt RH when the front passenger seat is occupied with the engine switch on (IG). If the front passenger seat belt is not fastened, the front passenger side seat belt warning light on the multi-display blinks. If the seat belt is fastened, the warning light goes off.
W/O Multi-display:
The No. 1 meter ECU detects the state of the front seat inner belt RH when the front passenger seat is occupied with the engine switch on (IG). If the front passenger seat belt is not fastened, the front passenger side seat belt warning light on the integration control and panel blinks. If the seat belt is fastened, the warning light goes off.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC
(a) Check for DTCs.

Result:





D -- Go to OCCUPANT CLASSIFICATION SYSTEM
C -- Go to AIRBAG SYSTEM
B -- Go to CAN COMMUNICATION SYSTEM
A -- Continue to next step.

2. INSPECT FUSE (P-IG1-1)
(a) Remove the P-IG1-1 fuse from the passenger side junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE FUSE
OK -- Continue to next step.

3. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Operate the Techstream according to the steps on the display and select "Active Test".

Combination Meter:





HINT: *: Confirm that the vehicle is stopped with the engine idling.

Result:





C -- REPLACE FRONT SEAT INNER BELT ASSEMBLY RH
B -- CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE DISPLAY - NO.1 METER ECU)
A -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL - NO. 1 METER ECU)




(a) Disconnect the L35 panel connector.
(b) Disconnect the L10 ECU connector
(c) Measure the resistance and voltage according to the value(s) in the table below.
Standard resistance:





Standard voltage





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

5. CHECK INTEGRATION CONTROL AND PANEL ASSEMBLY




(a) Remove the integration control and panel Removal.
(b) Connect the positive (+) lead to terminal 3 (IG), and the negative (-) battery lead to terminals 21 (PBEW) and 10 (GND1).
(c) Check that the front passenger side seat belt warning light comes on.
OK:
Front passenger side seat belt warning light comes on.
NG -- REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY
OK -- REPLACE NO. 1 METER ECU
6. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE DISPLAY - NO.1 METER ECU)




(a) Disconnect the L59 display connector.
(b) Disconnect the L10 ECU connector.
(c) Measure the resistance and voltage according to the value(s) in the table below.
Standard resistance:






Standard voltage:






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

7. CHECK MULTI-DISPLAY ASSEMBLY




(a) Disconnect the L59 display connector.
(b) Connect the positive (+) lead to terminal 3 (IG), and the negative (-) battery lead to terminals 21 (PBEW) and 10 (GND1).
(c) Check that the front passenger side seat belt warning light comes on.
OK:
Front passenger side seat belt warning light comes on.
NG -- REPLACE MULTI-DISPLAY ASSEMBLY
OK -- REPLACE NO. 1 METER ECU
8. REPLACE FRONT SEAT INNER BELT ASSEMBLY RH
(a) Temporarily replace the front seat inner belt RH with a new one Removal.
NEXT -- Continue to next step.

9. CHECK FRONT PASSENGER SIDE SEAT BELT WARNING LIGHT
(a) Check the front passenger side seat belt warning light function Operation Check.
OK:
Front passenger side seat belt warning light operates normally.
NG -- REPLACE NO. 1 METER ECU
OK -- END (FRONT SEAT INNER BELT RH IS DEFECTIVE)