Seat Belt Warning System Front Passenger Side Seat Belt Warning Light Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER

INSPECT SEPARATE TYPE FRONT SEAT CUSHION PAD (OCCUPANT DETECTION SENSOR)

INSPECT FRONT SEAT INNER BELT ASSEMBLY

CHECK HARNESS AND CONNECTOR (COMBINATION METER - FRONT PASSENGER SIDE INNER BELT AND BODY GROUND)

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


DESCRIPTION

The combination meter detects the state of the front seat inner belt RH*1 (or LH*2) when the front passenger seat is occupied with the ignition switch ON. If the front passenger seat belt is not fastened, the front seat belt warning light in the combination meter blinks. If the seat belt is fastened, the warning light goes off.
  1. *1: for LHD
  2. *2: for RHD
HINT:
The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Seat Belt.Seat Belt Warning System.Seat Belt Warning System Front Passenger Side Seat Belt Warning Light Malfunction


INSPECTION PROCEDURE

HINT:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.READ VALUE USING INTELLIGENT TESTER

  1. Check the Data List for proper functioning of the front passenger side seat belt buckle switch (LandCruiser RM0000012G70JUX.html).

    Combination Meter
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    P- Seatbelt Buckle SW
    		Front passenger side seat belt buckle signal / ON or OFF
    		ON: Front passenger side seat belt fastened
    OFF: Front passenger side seat belt unfastened
    		-
    OK:
    The display is as specified in the normal condition column.


NG
REPLACE COMBINATION METER ASSEMBLY (LandCruiser RM000003QKY01CX.html)
OK


2.INSPECT SEPARATE TYPE FRONT SEAT CUSHION PAD (OCCUPANT DETECTION SENSOR)
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the front seat assembly (LandCruiser RM000003VAO01ZX.html).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 3
    		More than 147 N (15 kgf, 33.0 lbf) applied to occupant detection sensor
    		Below 100 Ω


NG
REPLACE SEPARATE TYPE FRONT SEAT CUSHION PAD (OCCUPANT DETECTION SENSOR) (LandCruiser RM000003VAO01ZX.html)
OK


3.INSPECT FRONT SEAT INNER BELT ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Seat Belt.Seat Belt Warning System.Seat Belt Warning System Front Passenger Side Seat Belt Warning Light Malfunction

  1. Remove the front seat inner belt assembly RH*1 or LH*2 (LandCruiser RM000003RQO025X.html).

    1. *1: for LHD
    2. *2: for RHD

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2 (E) - 3
    		Always
    		Below 1 Ω
    3 (+) - 1
    		Front passenger side seat belt unfastened
    3 (+) - 1
    		Front passenger side seat belt fastened
    		10 kΩ or higher


NG
REPLACE FRONT SEAT INNER BELT ASSEMBLY (LandCruiser RM000003RQO025X.html)
OK


4.CHECK HARNESS AND CONNECTOR (COMBINATION METER - FRONT PASSENGER SIDE INNER BELT AND BODY GROUND)

  1. Disconnect the G7 meter connector.

  1. Disconnect the Q21*1 or R34*2 inner belt connector.

    1. *1: for LHD
    2. *2: for RHD

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

    Standard Resistance:
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    G7-15 (P/SB) - Q21-3 (+)
    		Always
    		Below 1 Ω
    Q21-2 (E) - Body ground
    G7-15 (P/SB) - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    G7-15 (P/SB) - R34-3 (+)
    		Always
    		Below 1 Ω
    R34-2 (E) - Body ground
    G7-15 (P/SB) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY (LandCruiser RM000003QKY01CX.html)