Rear Power Seat Control System Park / Neutral Position Switch Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOLD SEAT CONTROL ECU (PARK/NEUTRAL POSITION SWITCH SIGNAL)

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY)

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - PARK/NEUTRAL POSITION SWITCH)

REAR POWER SEAT CONTROL SYSTEM - Park / Neutral Position Switch Circuit


DESCRIPTION

The fold seat control ECU receives signals from the park/neutral position switch and controls the seat folding and return operations. If the shift lever is in any position other than P when the ignition switch is ON, the seat cannot be operated.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Seat.Front Power Seat Control System (W/ Memory).Rear Power Seat Control System Park / Neutral Position Switch Circuit


INSPECTION PROCEDURE

1.CHECK FOLD SEAT CONTROL ECU (PARK/NEUTRAL POSITION SWITCH SIGNAL)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Seat.Front Power Seat Control System (W/ Memory).Rear Power Seat Control System Park / Neutral Position Switch Circuit

  1. Remove the fold seat control ECU with its connectors still connected (LandCruiser RM0000045DH00EX.html).

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

    Standard Voltage:
    for LH Side
    Tester Connection
    		Condition
    		Specified Condition
    d1-6 (P) - Body ground
    		Ignition switch ACC or ON
    Shift lever in P
    		11 to 14 V
    Ignition switch ACC or ON
    Shift lever not in P
    		Below 1 V
    for RH Side
    Tester Connection
    		Condition
    		Specified Condition
    c1-6 (P) - Body ground
    		Ignition switch ACC or ON
    Shift lever in P
    		11 to 14 V
    Ignition switch ACC or ON
    Shift lever not in P
    		Below 1 V
    Text in Illustration
    *A
    		for LH Side
    *B
    		for RH Side
    *a
    		Component with harness connected
    (Fold Seat Control ECU)


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM000001YWK019X.html)

2.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY)


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Seat.Front Power Seat Control System (W/ Memory).Rear Power Seat Control System Park / Neutral Position Switch Circuit

  1. Disconnect the C40 switch connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C40-2 (RB) - Body ground
    		Ignition switch ACC or ON
    		11 to 14 V
    Ignition switch off
    		Below 1 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Park/Neutral Position Switch Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Seat.Front Power Seat Control System (W/ Memory).Rear Power Seat Control System Park / Neutral Position Switch Circuit

  1. Disconnect the C40 switch connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2 (RB) - 6 (PL)
    		Shift lever in P
    		Below 1 Ω
    2 (RB) - 6 (PL)
    		Shift lever not in P
    		10 kΩ or higher
    Result
    Result
    		Proceed to
    OK
    		A
    NG (for AC60F Automatic Transmission)
    		B
    NG (for A750F Automatic Transmission)
    		C


B
REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (LandCruiser RM000000O5O01MX.html)

C
REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (LandCruiser RM0000010NC089X.html)
A


4.CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - PARK/NEUTRAL POSITION SWITCH)

  1. Disconnect the d1*1 or c1*2 ECU connector.

    1. *1: for LH Side
    2. *2: for RH Side

  1. Disconnect the C40 switch connector.

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

    Standard Resistance:
    for LH Side
    Tester Connection
    		Condition
    		Specified Condition
    d1-6 (P) - C40-6 (PL)
    		Always
    		Below 1 Ω
    d1-6 (P) - Body ground
    		Always
    		10 kΩ or higher
    for RH Side
    Tester Connection
    		Condition
    		Specified Condition
    c1-6 (P) - C40-6 (PL)
    		Always
    		Below 1 Ω
    c1-6 (P) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE FOLD SEAT CONTROL ECU (LandCruiser RM0000045DP00EX.html)