Rear Power Seat Control System Fold Seat Switch Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOLD SEAT CONTROL ECU (FOLD SEAT SWITCH SIGNAL)

INSPECT NO. 1 FOLD SEAT SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 1 FOLD SEAT SWITCH)

INSPECT NO. 2 FOLD SEAT SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 2 FOLD SEAT SWITCH)

REAR POWER SEAT CONTROL SYSTEM - Fold Seat Switch Circuit


DESCRIPTION

When the fold seat switch is operated, a switch operation signal is sent to the fold seat control ECU. The ECU receives switch operation signals from each switch and activates the reclining motor and cushion motor.

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 Fold Seat Switch Circuit


INSPECTION PROCEDURE

1.CHECK FOLD SEAT CONTROL ECU (FOLD SEAT SWITCH SIGNAL)


  1. Check the No. 1 fold seat 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 Fold Seat Switch Circuit

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

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

      Standard Voltage:
      for LH Side
      Tester Connection
      		Condition
      		Specified Condition
      d1-10 (FLD2) - Body ground
      		No. 1 fold seat switch LH off
      		11 to 14 V
      No. 1 fold seat switch LH fold
      		Below 1 V
      d1-14 (RTN2) - Body ground
      		No. 1 fold seat switch LH off
      		11 to 14 V
      No. 1 fold seat switch LH return
      		Below 1 V
      for RH Side
      Tester Connection
      		Condition
      		Specified Condition
      c1-10 (FLD2) - Body ground
      		No. 1 fold seat switch RH off
      		11 to 14 V
      No. 1 fold seat switch RH fold
      		Below 1 V
      c1-14 (RTN2) - Body ground
      		No. 1 fold seat switch RH off
      		11 to 14 V
      No. 1 fold seat switch RH return
      		Below 1 V


  1. Check No. 2 fold seat 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 Fold Seat Switch Circuit

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

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

      Standard Voltage:
      for LH Side
      Tester Connection
      		Condition
      		Specified Condition
      d1-15 (RTRN) - Body ground
      		No. 2 fold seat switch LH off
      		11 to 14 V
      No. 2 fold seat switch LH return
      		Below 1 V
      d1-16 (FOLD) - Body ground
      		No. 2 fold seat switch LH off
      		11 to 14 V
      No. 2 fold seat switch LH fold
      		Below 1 V
      for RH Side
      Tester Connection
      		Condition
      		Specified Condition
      c1-15 (RTRN) - Body ground
      		No. 2 fold seat switch RH off
      		11 to 14 V
      No. 2 fold seat switch RH return
      		Below 1 V
      c1-16 (FOLD) - Body ground
      		No. 2 fold seat switch RH off
      		11 to 14 V
      No. 2 fold seat switch RH fold
      		Below 1 V
      Text in Illustration
      *A
      		for LH Side
      *B
      		for RH Side
      *a
      		Component with harness connected
      (Fold Seat Control ECU)
      Result
      Result
      		Proceed to
      OK
      		A
      NG (No. 1 fold seat switch signal)
      		B
      NG (No. 2 fold seat switch signal)
      		C


B
Go to step 2

C
Go to step 4
A

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

2.INSPECT NO. 1 FOLD SEAT 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 Fold Seat Switch Circuit

  1. Remove the No. 1 fold seat switch (LandCruiser RM0000045DM00EX.html).

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

    Standard Resistance:
    for LH Side
    Tester Connection
    		Switch Condition
    		Specified Condition
    6 (FLDL) - 7 (E)
    		No. 1 fold seat switch LH fold
    		Below 1 Ω
    No. 1 fold seat switch LH off
    		10 kΩ or higher
    1 (RTNL) - 7 (E)
    		No. 1 fold seat switch LH return
    		Below 1 Ω
    No. 1 fold seat switch LH off
    		10 kΩ or higher
    for RH Side
    Tester Connection
    		Switch Condition
    		Specified Condition
    8 (FLDR) - 7 (E)
    		No. 1 fold seat switch RH fold
    		Below 1 Ω
    No. 1 fold seat switch RH off
    		10 kΩ or higher
    3 (RTNR) - 7 (E)
    		No. 1 fold seat switch RH return
    		Below 1 Ω
    No. 1 fold seat switch RH off
    		10 kΩ or higher
    Text in Illustration
    *A
    		for LH Side
    *B
    		for RH Side


NG
REPLACE NO. 1 FOLD SEAT SWITCH ASSEMBLY (LandCruiser RM0000045DM00EX.html)
OK


3.CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 1 FOLD SEAT SWITCH)
  1. *1: for LH Side
  2. *2: for RH Side

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

  1. Disconnect the Q11*1 or R33*2 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
    d1-10 (FLD2) - Q11-6 (FLDL)
    		Always
    		Below 1 Ω
    d1-10 (FLD2) - Body ground
    		Always
    		10 kΩ or higher
    d1-14 (RTN2) - Q11-1 (RTNL)
    		Always
    		Below 1 Ω
    d1-14 (RTN2) - Body ground
    		Always
    		10 kΩ or higher
    for RH Side
    Tester Connection
    		Condition
    		Specified Condition
    c1-10 (FLD2) - R33-8 (FLDR)
    		Always
    		Below 1 Ω
    c1-10 (FLD2) - Body ground
    		Always
    		10 kΩ or higher
    c1-14 (RTN2) - R33-3 (RTNR)
    		Always
    		Below 1 Ω
    c1-14 (RTN2) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE FOLD SEAT CONTROL ECU (LandCruiser RM0000045DP00EX.html)

4.INSPECT NO. 2 FOLD SEAT 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 Fold Seat Switch Circuit

  1. Remove the No. 2 fold seat switch (LandCruiser RM0000045T100EX.html).

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

    Standard Resistance:
    for LH Side
    Tester Connection
    		Switch Condition
    		Specified Condition
    8 (FOLD) - 7 (E)
    		No. 2 fold seat switch LH fold
    		Below 1 Ω
    No. 2 fold seat switch LH off
    		10 kΩ or higher
    3 (RTRN) - 7 (E)
    		No. 2 fold seat switch LH return
    		Below 1 Ω
    No. 2 fold seat switch LH off
    		10 kΩ or higher
    for RH Side
    Tester Connection
    		Switch Condition
    		Specified Condition
    6 (FOLD) - 7 (E)
    		No. 2 fold seat switch RH fold
    		Below 1 Ω
    No. 2 fold seat switch RH off
    		10 kΩ or higher
    1 (RTRN) - 7 (E)
    		No. 2 fold seat switch RH return
    		Below 1 Ω
    No. 2 fold seat switch RH off
    		10 kΩ or higher
    Text in Illustration
    *A
    		for LH Side
    *B
    		for RH Side


NG
REPLACE NO. 2 FOLD SEAT SWITCH ASSEMBLY (LandCruiser RM0000045T100EX.html)
OK


5.CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - NO. 2 FOLD SEAT SWITCH)

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

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

  1. Disconnect the R12 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
    d1-15 (RTRN) - R12-3 (RTRN)
    		Always
    		Below 1 Ω
    d1-15 (RTRN) - Body ground
    		Always
    		10 kΩ or higher
    d1-16 (FOLD) - R12-8 (FOLD)
    		Always
    		Below 1 Ω
    d1-16 (FOLD) - Body ground
    		Always
    		10 kΩ or higher
    for RH Side
    Tester Connection
    		Condition
    		Specified Condition
    c1-15 (RTRN) - R12-1 (RTRN)
    		Always
    		Below 1 Ω
    c1-15 (RTRN) - Body ground
    		Always
    		10 kΩ or higher
    c1-16 (FOLD) - R12-6 (FOLD)
    		Always
    		Below 1 Ω
    c1-16 (FOLD) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE FOLD SEAT CONTROL ECU (LandCruiser RM0000045DP00EX.html)