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 combination meter 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 display and navigation module display*1 (multi-display*2) blinks. If the seat belt is fastened, the warning light turns off.
*1: w/ Navigation System
*2: w/o Navigation System

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

Combination Meter





OK:
Front passenger side seat belt warning light condition can be switched by Active Test
NG -- REPLACE FRONT SEAT INNER BELT ASSEMBLY RH
OK -- Continue to next step.
3. INSPECT FUSE (ECU-IG No. 1)
(a) Disconnect the ECU-IG No. 1 fuse from the cowl side junction block RH.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE FUSE
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMBINATION METER, BATTERY AND BODY GROUND)





(a) Disconnect the F28 display connector.
(b) Disconnect the E77 ECU connector.
(c) Measure the resistance and voltage according to the value(s) in the tables below.
Standard Resistance:






Standard Voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. CHECK DISPLAY AND NAVIGATION MODULE DISPLAY*1 (MULTI-DISPLAY*2)





(a) Disconnect the F28 display connector.
(b) Measure the voltage according to value(s) in the table below.
OK:






Result





C -- REPLACE MULTI-DISPLAY
B -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY
A -- REPLACE COMBINATION METER
6. 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.
7. CHECK FRONT PASSENGER SIDE SEAT BELT WARNING LIGHT
(a) Check the front passenger side seat belt warning light function Component Tests and General Diagnostics.
OK:
Front passenger side seat belt warning light operates normally.
NG -- REPLACE COMBINATION METER
OK -- END (FRONT SEAT INNER BELT RH IS DEFECTIVE)