Front Power Seat Control System (W/ Seat Position Memory System) Wireless-Linked Return Function Does Not Operate

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Seat. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

CHECK FRONT POWER SEAT CONTROL SYSTEM

CHECK MEMORY CALL FUNCTION (WIRELESS UNLOCK OR ENTRY UNLOCK)

CHECK WIRELESS UNLOCK FUNCTION

CHECK MEMORY CALL FUNCTION (MIRROR OPERATION)

REPLACE FRONT POWER SEAT SWITCH

CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

CHECK ENTRY AND START SYSTEM (for Entry Function)

CHECK MEMORY CALL FUNCTION (MIRROR OPERATION)

REPLACE FRONT POWER SEAT SWITCH

CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

CHECK MEMORY CALL FUNCTION (MIRROR OPERATION)

REPLACE FRONT POWER SEAT SWITCH

CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

READ VALUE USING GTS (MEM SW NO. w/ KEY ID)

READ VALUE USING GTS (DOOR COURTESY SW)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

FRONT POWER SEAT CONTROL SYSTEM (w/ Seat Position Memory System) - Wireless-linked Return Function does not Operate


DESCRIPTION

When a door is unlocked using the wireless unlock function or smart key unlock function, the certification ECU (smart key ECU assembly) sends a door unlock signal and key ID signal to the main body ECU (multiplex network body ECU). When the main body ECU (multiplex network body ECU) receives the door unlock signal, it stores the key ID. When the driver door is opened, the memory call and memory command information of the stored key ID is sent to front power seat switch. Front power seat switch receives the memory commands and performs the memory call operation according to predetermined control timing values.

INSPECTION PROCEDURE

NOTICE:
Before replacing the main body ECU (multiplex network body ECU) or the certification ECU (smart key ECU assembly), refer to the Entry and Start System (for Entry Function) (Click here).
1.CHECK CAN COMMUNICATION SYSTEM

  1. Use the GTS to check if the CAN communication system is functioning normally.

    1. for LHD (w/ Central Gateway ECU): Click here
    2. for LHD (w/o Central Gateway ECU): Click here
    3. for RHD (w/ Central Gateway ECU): Click here
    4. for RHD (w/o Central Gateway ECU): Click here
    OK:
    CAN communication DTC is not output.
    Result
    Result
    		Proceed to
    OK
    		A
    NG (for LHD (w/ Central Gateway ECU))
    		B
    NG (for LHD (w/o Central Gateway ECU))
    		C
    NG (for RHD (w/ Central Gateway ECU))
    		D
    NG (for RHD (w/o Central Gateway ECU))
    		E


B
GO TO CAN COMMUNICATION SYSTEM (Click here)

C
GO TO CAN COMMUNICATION SYSTEM (Click here)

D
GO TO CAN COMMUNICATION SYSTEM (Click here)

E
GO TO CAN COMMUNICATION SYSTEM (Click here)
A


2.CHECK FRONT POWER SEAT CONTROL SYSTEM

  1. Check the power seat control function (Click here).

  1. Check the seat position memory function (Click here).

  1. Check the seat position restoring function (Click here).

  1. Check the memory call registration function (Click here).

    Result
    Result
    		Proceed to
    OK
    		A
    NG (power seat control function)
    		B
    NG (seat position memory function)
    		C
    NG (seat position restoring function)
    		D
    NG (memory call registration function)
    		E



B
GO TO PROBLEM SYMPTOMS TABLE (Click here)

C
GO TO OTHER FLOW CHART (Power Seat Position is not Memorized) (Click here)

D
GO TO OTHER FLOW CHART (Power Seat does not Return to Memorized Position) (Click here)

E
GO TO OTHER FLOW CHART (Wireless Transmitter Memory Function does not Operate) (Click here)
A


3.CHECK MEMORY CALL FUNCTION (WIRELESS UNLOCK OR ENTRY UNLOCK)

  1. Turn the engine switch off.

  1. Close and lock all doors.

  1. Unlock the driver door by pressing the unlock switch of the memory call registered key or touching the driver door outside handle while holding the memory call registered key.

  1. Open the driver door and check that the driver seat moves to the memorized position.

    Result
    Result
    		Proceed to
    Memory call function linked with the wireless unlock function does not operate.
    		A
    Memory call function linked with the entry unlock function does not operate.
    		B
    Both memory call function linked with the wireless unlock function and entry unlock function do not operate.
    		C



B
Go to step 10

C
Go to step 16
A


4.CHECK WIRELESS UNLOCK FUNCTION

  1. Check the wireless unlock function (Click here).

    OK:
    Wireless unlock function is normal.


NG
GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (Click here)
OK


5.CHECK MEMORY CALL FUNCTION (MIRROR OPERATION)

  1. Perform the memory call function and check the outer mirror operation (Click here).

    OK:
    Outer mirror operates normally.


NG
Go to step 8
OK


6.REPLACE FRONT POWER SEAT SWITCH

  1. Temporarily replace the front power seat switch LH*1, RH*2 with a new or normally functioning one (Click here).
    *1: for LHD
    *2: for RHD


NEXT


7.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

  1. Check the memory registration and automatic memory call function of the memory call function (Click here).

    OK:
    Memory call function linked with the wireless unlock function operates normally.


NG
Go to step 8
OK

END (FRONT POWER SEAT SWITCH WAS DEFECTIVE)

8.REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

  1. Temporarily replace the main body ECU (multiplex network body ECU) with a new one.

    1. for LHD: Click here
    2. for LHD: Click here

NEXT


9.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

  1. Check the memory registration and automatic memory call function of the memory call function (Click here).

    OK:
    Memory call function linked with the wireless unlock function operates normally.


NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK

END (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] WAS DEFECTIVE)

10.CHECK ENTRY AND START SYSTEM (for Entry Function)

  1. Check the entry unlock function of the entry and start system (for entry function) (Click here).

    OK:
    Entry unlock function is normal.


NG
GO TO ENTRY AND START SYSTEM (for Entry Function) (Click here)
OK


11.CHECK MEMORY CALL FUNCTION (MIRROR OPERATION)

  1. Perform the memory call function and check the outer mirror operation (Click here).

    OK:
    Outer mirror operates normally.
    Result
    Result
    		Proceed to
    OK
    		A
    NG
    		B


B
Go to step 14
A


12.REPLACE FRONT POWER SEAT SWITCH

  1. Temporarily replace the front power seat switch LH*1, RH*2 with a new or normally functioning one (Click here).
    *1: for LHD
    *2: for RHD


NEXT


13.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

  1. Check the memory registration and automatic memory call function of the memory call function (Click here).

    OK:
    Memory call function linked with the wireless unlock function operates normally.
    Result:
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD
    		C


B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)

C
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)
A

END (FRONT POWER SEAT SWITCH WAS DEFECTIVE)

14.REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

  1. Temporarily replace the main body ECU (multiplex network body ECU) with a new one.

    1. for LHD: Click here
    2. for RHD: Click here

NEXT


15.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

  1. Check the memory registration and automatic memory call function of the memory call function (Click here).

    OK:
    Memory call function linked with the wireless unlock function operates normally.


NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK

END (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] WAS DEFECTIVE)

16.CHECK MEMORY CALL FUNCTION (MIRROR OPERATION)

  1. Perform the memory call function and check the outer mirror operation (Click here).

    OK:
    Outer mirror operates normally.


NG
Go to step 19
OK


17.REPLACE FRONT POWER SEAT SWITCH

  1. Temporarily replace the front power seat switch LH*1, RH*2 with a new or normally functioning one (Click here).
    *1: for LHD
    *2: for RHD


NEXT


18.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

  1. Check the memory registration and automatic memory call function of the memory call function (Click here).

    OK:
    Memory call function linked with the wireless unlock function operates normally.
    Result
    		Proceed to
    OK
    		A
    NG (for LHD)
    		B
    NG (for RHD)
    		C


B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)

C
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (Click here)
A

END (FRONT POWER SEAT SWITCH WAS DEFECTIVE)

19.READ VALUE USING GTS (MEM SW NO. w/ KEY ID)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Body Electrical / Main Body / Data List.

  1. Read the Data List according to the display on the GTS.

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Mem SW No. w/KeyID1
    		Memory switch linked with key ID1 / NONE, MEM SW1, MEM SW2, or MEM SW3
    		NONE: No switches linked with key ID1
    MEM SW1: M1 switch linked with key ID1
    MEM SW2: M2 switch linked with key ID1
    MEM SW3: M3 switch linked with key ID1
    		-
    Mem SW No. w/KeyID2
    		Memory switch linked with key ID2 / NONE, MEM SW1, MEM SW2, or MEM SW3
    		NONE: No switches linked with key ID2
    MEM SW1: M1 switch linked with key ID2
    MEM SW2: M2 switch linked with key ID2
    MEM SW3: M3 switch linked with key ID2
    		-
    Mem SW No. w/KeyID3
    		Memory switch linked with key ID3 / NONE, MEM SW1, MEM SW2, or MEM SW3
    		NONE: No switches linked with key ID3
    MEM SW1: M1 switch linked with key ID3
    MEM SW2: M2 switch linked with key ID3
    MEM SW3: M3 switch linked with key ID3
    		-
    Mem SW No. w/KeyID4
    		Memory switch linked with key ID4 / NONE, MEM SW1, MEM SW2, or MEM SW3
    		NONE: No switches linked with key ID4
    MEM SW1: M1 switch linked with key ID4
    MEM SW2: M2 switch linked with key ID4
    MEM SW3: M3 switch linked with key ID4
    		-
    Mem SW No. w/KeyID5
    		Memory switch linked with key ID5 / NONE, MEM SW1, MEM SW2, or MEM SW3
    		NONE: No switches linked with key ID5
    MEM SW1: M1 switch linked with key ID5
    MEM SW2: M2 switch linked with key ID5
    MEM SW3: M3 switch linked with key ID5
    		-
    Mem SW No. w/KeyID6
    		Memory switch linked with key ID6 / NONE, MEM SW1, MEM SW2, or MEM SW3
    		NONE: No switches linked with key ID6
    MEM SW1: M1 switch linked with key ID6
    MEM SW2: M2 switch linked with key ID6
    MEM SW3: M3 switch linked with key ID6
    		-
    Mem SW No. w/KeyID7
    		Memory switch linked with key ID7 / NONE, MEM SW1, MEM SW2, or MEM SW3
    		NONE: No switches linked with key ID7
    MEM SW1: M1 switch linked with key ID7
    MEM SW2: M2 switch linked with key ID7
    MEM SW3: M3 switch linked with key ID7
    		-

  1. Enter the following menus: Body Electrical / Driver Seat / Data List.

  1. Read the Data List according to the display on the GTS.

    Driver Seat
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Seat Memory No1
    		Seat position memorized with M1 switch / Mem or Not Mem
    		Mem: Memorized
    Not Mem: Not memorized
    		-
    Seat Memory No2
    		Seat position memorized with M2 switch / Mem or Not Mem
    		Mem: Memorized
    Not Mem: Not memorized
    		-
    Seat Memory No3
    		Seat position memorized with M3 switch / Mem or Not Mem
    		Mem: Memorized
    Not Mem: Not memorized
    		-

    OK:
    On the GTS display, it is confirmed that the memory switches which are linked with key IDs memorize the seat position (for example, on the GTS display, "Mem SW No. w/KeyID1" displays "MEM SW1" and "Seat Memory No1" displays "Mem").


NG
PERFORM MEMORY CALL REGISTRATION (Click here)
OK


20.READ VALUE USING GTS (DOOR COURTESY SW)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Enter the following menus: Body Electrical / Main Body / Data List.

  1. Read the Data List according to the display on the GTS.

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    FL Door Courtesy SW
    		Front door courtesy light switch assembly LH signal / ON or OFF
    		ON: Driver door open
    OFF: Driver door closed
    		for LHD
    FR Door Courtesy SW
    		Front door courtesy light switch assembly RH signal / ON or OFF
    		ON: Driver door open
    OFF: Driver door closed
    		for RHD

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


NG
GO TO LIGHTING SYSTEM (Click here)
OK


21.REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

  1. Temporarily replace the main body ECU (multiplex network body ECU) with a new one.

    1. for LHD: Click here
    2. for RHD: Click here

NEXT


22.CHECK MEMORY CALL FUNCTION (MEMORY REGISTRATION AND AUTOMATIC MEMORY CALL FUNCTION)

  1. Check the memory registration and automatic memory call function of the memory call function (Click here).

    OK:
    Memory call function linked with the wireless unlock function operates normally.


NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK

END (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] WAS DEFECTIVE)