Seat Belt Warning Light for Passenger Seat does not Operate

DESCRIPTION

w/o Navigation system:
When the ignition switch is turned to the ON position, the occupant detection sensor transmits front seat inner belt status to the center integration panel via the combination meter. If the front passenger seat belt is not fastened when the seat is occupied, the warning light on the center integration panel blinks. If the seat belt is fastened, the warning light will turn off.
w/ Navigation system:
When the ignition switch is turned to the ON position, the occupant detection sensor transmits front seat inner belt status to the multi-display via the combination meter. If the front passenger seat belt is not fastened when the seat is occupied, the warning light on the multi-display blinks. If the seat belt is fastened, the warning light will turn off.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER

1. Operate the intelligent tester according to the steps on the display and select "ACTIVE TEST".

COMBINATION METER:

Item	Test Details	Diagnostic Note
P-BELT REMIND	P-SEAT BELT indicator light (OFF/ON)	-

OK:

Switch condition (ON/OFF) can be switched by "ACTIVE TEST".

NG	GO TO AIRBAG SYSTEM

OK

2. SYSTEM CHECK

1. System check

w/o Navigation system	B
w/ Navigation system	A

B	Go to step 7

A

3. INSPECT MULTI-DISPLAY

1. Disconnect the M1 connector.

2. Measure the voltage according to the value(s) in the table below.

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   M1-10 (IG+) - Body ground	Ignition switch ON	10 to 14 V
   M1-21 (PBEW) - Body ground	Ignition switch ON, sit on the front passenger seat, seat belt warning light OFF→ Blinks	10 to 14 V → Below 1 V

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   M1-3 (GND) - Body ground	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4. INSPECT COMBINATION METER ASSEMBLY

1. Disconnect the C9 connector.

2. Measure the resistance according to the value(s) in the table below.

Standard resistance:

Tester Connection	Condition	Specified Condition
C9-20 (P-SEAT) - Body ground	Ignition switch ON, sit on the front passenger seat, seat belt is unfastened → Fastened	10 kΩ or higher → Below 1 Ω

NG	Go to step 6

OK

5. CHECK WIRE HARNESS (COMBINATION METER ASSEMBLY - MULTI-DISPLAY)

1. Disconnect the C9 and M1 connectors.

2. Measure the resistance according to the value(s) in the table below.

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   C9-22 (P SEAT BELT) - M1-21 (PBEW)	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE COMBINATION METER ASSEMBLY

6. CHECK WIRE HARNESS (COMBINATION METER ASSEMBLY - OCCUPANT DETECTION SENSOR)

1. Disconnect the C9 and B16 connectors.

2. Measure the resistance according to the value(s) in the table below.

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   C9-20 (P-SEAT) - B16-1	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE OCCUPANT DETECTION SENSOR

7. CHECK INTEGRATION CONTROL & PANEL

1. Disconnect the C4 connector.

2. Measure the voltage and resistance according to the value(s) in the table below.

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   C4-9 (IG) - Body ground	Ignition switch ON	10 to 14 V

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   C4-7 (GND) - Body ground	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

8. CHECK WIRE HARNESS (COMBINATION METER ASSEMBLY - OCCUPANT DETECTION SENSOR)

1. Disconnect the C9 and B16 connectors.

2. Measure the resistance according to the value(s) in the table below.

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   C9-20 (P-SEAT) - B16-1	Always	Below 1 Ω

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
GO TO METER/GAUGE SYSTEM