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

DESCRIPTION

With the engine 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.

INSPECTION PROCEDURE

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.

PROCEDURE


  1. CHECK POWER DOOR LOCK CONTROL SYSTEM


    1. Check the manual lock/unlock function by using the door control switch (multiplex network master switch assembly) Click here.

      OK
      Manual lock/unlock function operates normally.

    NG

    GO TO POWER DOOR LOCK CONTROL SYSTEM Click here

    OK

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


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

      OK
      Engine starts normally.

    NG

    GO TO SMART 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.

    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.

    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 engine switch on (IG).

    3. Turn the GTS on.

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

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

      Main Body (Main Body ECU (Multiplex Network Body ECU))
      Tester Connection Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Courtesy Front door courtesy light switch assembly signal / OPEN or CLOSE

      OPEN: Driver door open

      CLOSE: Driver door closed

      		 -
      OK
      ON or OFF appears on the screen according to the driver door condition.

    NG

    GO TO LIGHTING SYSTEM (Front Door 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 multiplex network master switch assembly.


      • Engine switch is off

      • Press and hold the M1or M2 seat memory switch

      • Driver door closed

      • Carry the key

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

      OK
      Buzzer sounds normally.

    NG

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

    OK

  7. READ VALUE USING GTS (MEMORY CALL REGISTRATION)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

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

      Main Body (Main Body ECU (Multiplex Network Body ECU))
      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.

      OK
      On the GTS display, it is confirmed that the memory call has been registered.

    NG

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

    OK

  8. CHECK MEMORY CALL FUNCTION


    1. Turn the engine 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.

      OK
      Driver seat moves to the memorized position.

    NG

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

    OK

    USE SIMULATION METHOD TO CHECK Click here

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


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


    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.


      • Engine switch is off

      • Press and hold the M1 or M2 seat memory switch

      • Driver door closed

      • Carry the key

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

      OK
      Buzzer sounds normally.

    NG

    REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY) Click here

    OK

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

  11. REPLACE FRONT POWER SEAT SWITCH LH (W/ MEMORY)


    1. Replace the front power seat switch LH (w/ Memory) Click here.


    NEXT

  12. 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.


      • Engine switch is off

      • Press and hold the M1 or M2 seat memory switch

      • Driver door closed

      • Carry the key

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

      OK
      Buzzer sounds normally.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    END (FRONT POWER SEAT SWITCH LH (W/ MEMORY) WAS DEFECTIVE)