FRONT POWER SEAT CONTROL SYSTEM(w/ Memory) Wireless Transmitter Memory Function does not Operate

DESCRIPTION

With the ignition switch off and the driver door closed, pressing the manual lock or unlock switch on the multiplex network master switch assembly while holding a seat memory switch (M1 switch or M2 switch) will register the transmitter recognition code into the seat memory switch that was pressed. After registration is completed, the answer back buzzer sounds.

CAUTION / NOTICE / HINT

Note


  • The seat position will not be recorded if the SET switch and 2 of the seat memory switches are pressed simultaneously.

  • If a memorizing operation has failed, release all switches. The seat memory function does not operate unless the switches are released.

  • The front power seat control system (w/ Memory) uses the CAN communication system. First, confirm that there is no malfunction in the communication system by checking communication function of the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure.

    Click here

  • When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.

PROCEDURE


  1. CHECK POWER DOOR LOCK CONTROL SYSTEM


    1. Check the manual lock/unlock function by using the door control switch (power window regulator master switch assembly).

      Click here

      OK
      Manual lock/unlock function operates normally.
      Result
      Proceed to
      OK (w/ Entry and Start System)
      OK (w/o Entry and Start System)
      NG

    OK (w/o Entry and Start System)

    CHECK WIRELESS DOOR LOCK CONTROL SYSTEM Click here

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK (w/ Entry and Start System)

  2. CHECK ENTRY AND START SYSTEM (for Start Function)


    1. Check that the engine starts normally when the ignition switch is pressed with the brake pedal depressed and while carrying the key.

      OK
      Engine starts normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO ENTRY AND START SYSTEM (for Start Function) Click here

    OK

  3. CHECK SEAT POSITION MEMORY FUNCTION


    1. Store a seat position in memory.

      Click here

    2. Check that the buzzer sounds for 0.5 seconds to indicate that a position has been stored.

      Note


      • The seat position will not be recorded if the SET switch and 2 of the seat memory switches are pressed simultaneously.

      • If a memorizing operation has failed, release all switches. The seat memory function does not operate unless the switches are released.

      OK
      Seat position memory function operates normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat Position is not Memorized) Click here

    OK

  4. CHECK SEAT POSITION RESTORING FUNCTION


    1. Restore a memorized seat position.

      Click here

    2. Check that the buzzer sounds for 0.1 seconds and the seat automatically moves to the memorized position.

      Note


      • The seat will not return to the memorized position if 2 of the seat memory switches are pressed simultaneously.

      • If a restoring operation has failed, release all switches. The seat memory restoring function does not operate unless the switches are released.

      OK
      Seat position restoring function operates normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO OTHER DIAGNOSIS PROCEDURE (Power Seat does not Return to Memorized Position) Click here

    OK

  5. READ VALUE USING GTS (DRIVER DOOR COURTESY SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

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


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Door Courtesy SW Front door courtesy light switch assembly signal ON or OFF

      ON: Driver door open

      OFF: Driver door closed

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      FR Door Courtesy SW
      OK
      ON or OFF appears on the screen according to the driver door condition.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM (Courtesy Switch Circuit) Click here

    OK

  6. CHECK MEMORY CALL REGISTRATION FUNCTION


    1. When the following conditions are met, press the manual lock or unlock switch on the power window regulator master switch assembly.


      • Ignition switch is off

      • M1 or M2 seat memory switch is pressed and held

      • Driver door closed

      • Key is being carried

    2. Check that the buzzer sounds for 0.5 seconds to indicate the completion of memory call registration.

      Click here

      Result
      Proceed to
      Buzzer sounds normally
      Buzzer does not sound normally

    Buzzer does not sound normally

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

    Buzzer sounds normally

  7. READ VALUE USING GTS (MEMORY CALL REGISTRATION)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

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


      Body Electrical > Main Body > Data List
      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*

      		 -

      • *: Although the item is displayed on the GTS, it is not applicable to this vehicle.


      Body Electrical > Main Body > Data List
      Tester Display
      Mem SW No. w/KeyID1
      Mem SW No. w/KeyID2
      Mem SW No. w/KeyID3
      Mem SW No. w/KeyID4
      Mem SW No. w/KeyID5
      Mem SW No. w/KeyID6
      Mem SW No. w/KeyID7
      OK
      On the GTS display, it is confirmed that the memory call has been registered.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  8. CHECK MEMORY CALL FUNCTION


    1. Turn the ignition switch off.

    2. Close and lock all doors.

    3. 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.

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

      Click here

      Result
      Proceed to
      Driver seat moves to the memorized position
      Driver seat does not move to the memorized position

    Driver seat moves to the memorized position

    USE SIMULATION METHOD TO CHECK Click here

    Driver seat does not move to the memorized position

    GO TO OTHER DIAGNOSIS PROCEDURE (Wireless-linked Return Function does not Operate) Click here

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


    1. Replace the main body ECU (multiplex network body ECU).

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. CHECK MEMORY CALL REGISTRATION FUNCTION


    1. When the following conditions are met, press the manual lock or unlock switch on the multiplex network master switch assembly.


      • Ignition switch is off

      • M1 or M2 seat memory switch is pressed and held

      • Driver door closed

      • Key is being carried

    2. Check that the buzzer sounds for 0.5 seconds to indicate the completion of memory call registration.

      Click here

      Result
      Proceed to
      Buzzer sounds normally
      Buzzer does not sound normally

    Buzzer sounds normally

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

    Buzzer does not sound normally

    REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY Click here

  11. CHECK WIRELESS DOOR LOCK CONTROL SYSTEM


    1. Check that the wireless door lock/unlock operates normally.

      OK
      Wireless door lock/unlock operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 3 Click here

    NG

    GO TO WIRELESS DOOR LOCK CONTROL SYSTEM Click here

  12. REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY


    1. Replace the position control ECU and switch assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  13. CHECK MEMORY CALL REGISTRATION FUNCTION


    1. When the following conditions are met, press the manual lock or unlock switch on the multiplex network master switch assembly.


      • Ignition switch is off

      • M1 or M2 seat memory switch is pressed and held

      • Driver door closed

      • Key is being carried

    2. Check that the buzzer sounds for 0.5 seconds to indicate the completion of memory call registration.

      Click here

      Result
      Proceed to
      Buzzer sounds normally
      Buzzer does not sound normally

    Buzzer sounds normally

    END (POSITION CONTROL ECU AND SWITCH ASSEMBLY WAS DEFECTIVE)

    Buzzer does not sound normally

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)