Seat. Front Power Seat Control System (W/ Seat Position Memory System) One Or More Power Seat Motors Do Not Operate

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200

Seat. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FRONT POWER SEAT OPERATION

READ VALUE USING GTS (FRONT POWER SEAT SWITCH)

PERFORM ACTIVE TEST USING GTS (FRONT POWER SEAT MOTOR)

INSPECT FRONT SEAT WITH ADJUSTER FRAME ASSEMBLY (FRONT POWER SEAT MOTOR)

CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT MOTOR)

INSPECT POWER SEAT SWITCH ASSEMBLY

INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY

CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - BATTERY AND BODY GROUND)

FRONT POWER SEAT CONTROL SYSTEM (w/ Seat Position Memory System) - One or more Power Seat Motors do not Operate

DESCRIPTION

When the front power seat switch LH*1, RH*2 is operated, a command signal is sent to the built-in ECU. The built-in ECU then controls the appropriate seat motor as needed. The built-in ECU is designed so that a malfunction of the seat memory system will not interfere with manual seat control.

WIRING DIAGRAM

Land Cruiser. Urj200, 202 Grj200 Vdj200.Seat.Front Power Seat Control System (W/ Seat Position Memory System).Front Power Seat Control System (W/ Seat Position Memory System) One Or More Power Seat Motors Do Not Operate

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1.CHECK FRONT POWER SEAT OPERATION

Check that each function of the power seat operates normally by using the front power seat switches (Click here).
Result
Result
Proceed to
All front power seat switch operations are malfunctioning except lumbar support switch operation
A
Only lumbar support switch operation is malfunctioning
B

Result
Result	Proceed to
All front power seat switch operations are malfunctioning except lumbar support switch operation	A
Only lumbar support switch operation is malfunctioning	B

Go to step 6

A

2.READ VALUE USING GTS (FRONT POWER SEAT SWITCH)

Using the GTS, read the Data List.

Driver Seat
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Reclining Rear	Reclining switch signal (Rearward) / ON or OFF	ON: Reclining switch (Rearward) on OFF: Reclining switch (Rearward) off	-
Reclining Front	Reclining switch signal (Forward) / ON or OFF	ON: Reclining switch (Forward) on OFF: Reclining switch (Forward) off	-
Front Vertical Down	Front vertical switch signal (Downward) / ON or OFF	ON: Front vertical switch (Downward) on OFF: Front vertical switch (Downward) off	-
Front Vertical Up	Front vertical switch signal (Upward) / ON or OFF	ON: Front vertical switch (Upward) on OFF: Front vertical switch (Upward) off	-
Lifter Switch Down	Lifter switch signal (Downward) / ON or OFF	ON: Lifter switch (Downward) on OFF: Lifter switch (Downward) off	-
Lifter Switch Up	Lifter switch signal (Upward) / ON or OFF	ON: Lifter switch (Upward) on OFF: Lifter switch (Upward) off	-
Slide Rear	Sliding switch signal (Rearward) / ON or OFF	ON: Sliding switch (Rearward) on OFF: Sliding switch (Rearward) off	-
Slide Front	Sliding switch signal (Forward) / ON or OFF	ON: Sliding switch (Forward) on OFF: Sliding switch (Forward) off	-

OK:: On the GTS screen, each item changes between ON and OFF according to above chart.

REPLACE FRONT POWER SEAT SWITCH (Click here)

OK

3.PERFORM ACTIVE TEST USING GTS (FRONT POWER SEAT MOTOR)

Using the GTS, perform the Active Test.

Driver Seat
Tester Display	Test Part	Control Range	Diagnostic Note
Seat Reclining	Seat reclining operation	OFF/Rear/Front	-
Front Vertical Operation	Seat front vertical operation	OFF/Down/Up	-
Lifter Operation	Seat lifter operation	OFF/Down/Up	-
Seat Slide Operation	Seat sliding operation	OFF/Rear/Front	-

OK:: The power seat motors operate normally.

Go to step 4

REPLACE FRONT POWER SEAT SWITCH (Click here)

4.INSPECT FRONT SEAT WITH ADJUSTER FRAME ASSEMBLY (FRONT POWER SEAT MOTOR)

Remove the front seat with adjuster frame assembly LH*1, RH*2 (Click here).
*1: for LHD
*2: for RHD

Check operation of the slide motor.
1. Check if the seat moves smoothly when the battery is connected to the slide motor connector terminals.
  OK:
  Measurement Condition
  Specified Condition
  Battery positive (+) → 1
  Battery negative (-) → 2
  Forward
  Battery positive (+) → 2
  Battery negative (-) → 1
  Rearward

Check operation of the front vertical motor.
1. Check if the seat moves smoothly when the battery is connected to the front vertical motor connector terminals.
  OK:
  Measurement Condition
  Specified Condition
  Battery positive (+) → 1
  Battery negative (-) → 2
  Upward
  Battery positive (+) → 2
  Battery negative (-) → 1
  Downward

Check operation of the lifter motor.
1. Check if the seat moves smoothly when the battery is connected to the lifter motor connector terminals.
  OK:
  Measurement Condition
  Specified Condition
  Battery positive (+) → 2
  Battery negative (-) → 1
  Upward
  Battery positive (+) → 1
  Battery negative (-) → 2
  Downward

Check operation of the reclining motor.
1. Check if the seat moves smoothly when the battery is connected to the reclining motor connector terminals.
  OK:
  Measurement Condition
  Specified Condition
  Battery positive (+) → 2
  Battery negative (-) → 1
  Forward
  Battery positive (+) → 1
  Battery negative (-) → 2
  Rearward

REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY (Click here)

OK

5.CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - POWER SEAT MOTOR)

*1: for LHD
*2: for RHD

Disconnect the c39*1, c46*2 switch connector.

Disconnect the c17*1, c3*2, c18*1, c4*2, c19*1, c5*2 and c20*1, c6*2 motor connectors.

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

Standard Resistance:

for LHD:
Tester Connection	Condition	Specified Condition
c39-4 (SLD-) - c17-2	Always	Below 1 Ω
c39-2 (SLD+) - c17-1	Always	Below 1 Ω
c39-5 (FRV-) - c19-2	Always	Below 1 Ω
c39-7 (FRV+) - c19-1	Always	Below 1 Ω
c39-11 (LFT-) - c18-1	Always	Below 1 Ω
c39-8 (LFT+) - c18-2	Always	Below 1 Ω
c39-12 (RCL-) - c20-1	Always	Below 1 Ω
c39-9 (RCL+) - c20-2	Always	Below 1 Ω
c39-1 (GND) - Body ground	Always	Below 1 Ω
c39-4 (SLD-) or c17-2 - Body ground	Always	10 kΩ or higher
c39-2 (SLD+) or c17-1 - Body ground	Always	10 kΩ or higher
c39-5 (FRV-) or c19-2 - Body ground	Always	10 kΩ or higher
c39-7 (FRV+) or c19-1 - Body ground	Always	10 kΩ or higher
c39-11 (LFT-) or c18-1 - Body ground	Always	10 kΩ or higher
c39-8 (LFT+) or c18-2 - Body ground	Always	10 kΩ or higher
c39-12 (RCL-) or c20-1 - Body ground	Always	10 kΩ or higher
c39-9 (RCL+) or c20-2 - Body ground	Always	10 kΩ or higher

for RHD:
Tester Connection	Condition	Specified Condition
c46-4 (SLDR) - c3-2	Always	Below 1 Ω
c46-2 (SLDF) - c3-1	Always	Below 1 Ω
c46-5 (FDWN) - c5-2	Always	Below 1 Ω
c46-7 (FUP) - c5-1	Always	Below 1 Ω
c46-11 (LDWN) - c4-1	Always	Below 1 Ω
c46-8 (LUP) - c4-2	Always	Below 1 Ω
c46-12 (RCLR) - c6-1	Always	Below 1 Ω
c46-9 (RCLF) - c6-2	Always	Below 1 Ω
c46-1 (GND) - Body ground	Always	Below 1 Ω
c46-4 (SLDR) or c3-2 - Body ground	Always	10 kΩ or higher
c46-2 (SLDF) or c3-1 - Body ground	Always	10 kΩ or higher
c46-5 (FDWN) or c5-2 - Body ground	Always	10 kΩ or higher
c46-7 (FUP) or c5-1 - Body ground	Always	10 kΩ or higher
c46-11 (LDWN) or c4-1 - Body ground	Always	10 kΩ or higher
c46-8 (LUP) or c4-2 - Body ground	Always	10 kΩ or higher
c46-12 (RCLR) or c6-1 - Body ground	Always	10 kΩ or higher
c46-9 (RCLF) or c6-2 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE FRONT POWER SEAT SWITCH (Click here)

6.INSPECT POWER SEAT SWITCH ASSEMBLY

*1: for LHD
*2: for RHD

Remove the power seat switch assembly LH*1, RH*2 (Click here).

Inspect the power seat switch assembly LH*1, RH*2 (Click here).

REPLACE POWER SEAT SWITCH ASSEMBLY (Click here)

OK

7.INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY

*1: for LHD
*2: for RHD

Remove the lumbar support adjuster assembly LH*1, RH*2 (Click here).

Inspect the lumbar support adjuster assembly LH*1, RH*2 (Click here).

REPLACE LUMBAR SUPPORT ADJUSTER ASSEMBLY (Click here)

OK

8.CHECK HARNESS AND CONNECTOR (POWER SEAT SWITCH ASSEMBLY - BATTERY AND BODY GROUND)

Disconnect the c16*1, c26*2 switch connector.
*1: for LHD
*2: for RHD

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

Standard Voltage:
for LHD:
Tester Connection
Condition
Specified Condition
c16-3 (B) - Body ground
Always
11 to 14 V
for RHD:
Tester Connection
Condition
Specified Condition
c26-3 (B) - Body ground
Always
11 to 14 V

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

Standard Resistance:
for LHD:
Tester Connection
Condition
Specified Condition
c16-5 (E2) - Body ground
Always
Below 1 Ω
c16-2 (E2) - Body ground
for RHD:
Tester Connection
Condition
Specified Condition
c26-5 (E2) - Body ground
Always
Below 1 Ω
c26-2 (E2) - Body ground

REPAIR OR REPLACE HARNESS OR CONNECTOR

Measurement Condition	Specified Condition
Battery positive (+) → 1 Battery negative (-) → 2	Forward
Battery positive (+) → 2 Battery negative (-) → 1	Rearward