POWER MIRROR CONTROL SYSTEM (w/ Memory) Power Mirror Surface Position is not Memorized

SYSTEM DESCRIPTION

If either the M1, M2 or M3 seat memory switch is pressed, the outer mirror control ECU assembly (driver door) detects the switch operation and sends the seat memory switch signal to the main body ECU (multiplex network body ECU) via CAN communication. On receiving the seat memory switch signal, the main body ECU (multiplex network body ECU) sends the memory request signal to each outer mirror control ECU assembly via CAN communication. When receiving this signal, each outer mirror control ECU assembly stores the mirror surface position based on information from the mirror position sensor, which is built into the outer rear view mirror assembly.

Tech Tips

Each outer rear view mirror assembly has a built-in mirror vertical position sensor and mirror horizontal position sensor.

Note


  • The mirror surface position will not be memorized if the engine switch is not on (IG).

  • The mirror surface position will not be stored if the seat memory SET switch and 2 or more seat memory switches are pressed simultaneously.

  • If the operation fails, the mirror surface position will not be memorized until the seat memory SET switch is released and the operation is attempted again.

  • The mirror surface position will not be memorized when the mirror is operated manually.

WIRING DIAGRAM

A01G66OE03

INSPECTION PROCEDURE

Note

If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


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

      OK
      CAN communication DTCs are not output.

    NG

    GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    OK

  2. READ VALUE USING GTS (SEAT MEMORY 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 Electrical / Mirror L / Data List.

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

      Mirror L
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Memory Switch1 Seat memory switch M1 signal/ ON or OFF

      ON: Seat memory switch M1 on

      OFF: Seat memory switch M1 off

      		 -
      Seat Memory Switch2 Seat memory switch M2 signal/ ON or OFF

      ON: Seat memory switch M2 on

      OFF: Seat memory switch M2 off

      		 -
      Seat Memory Switch3 Seat memory switch M3 signal/ ON or OFF

      ON: Seat memory switch M3 on

      OFF: Seat memory switch M3 off

      		 -
      Seat Memory Set SW Seat memory switch SET signal/ ON or OFF

      ON: Seat memory switch SET on

      OFF: Seat memory switch SET off

      		 -
      OK
      The GTS display changes between ON and OFF according to the switch operations.

    NG

    CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY) Click here

    OK

  3. CHECK SEAT MEMORY SWITCH FUNCTION


    1. When any seat memory switch (M1, M2 or M3) is pressed, check that the driver seat moves to the memorized position.

      OK
      The driver seat moves to the memorized position.

    NG

    GO TO POWER SEAT CONTROL SYSTEM (Power Seat does not Return to Memorized Position) Click here

    OK

  4. CHECK MEMORY AND REACTIVATION FUNCTION


    1. A01G8XME03
      Text in Illustration
      *a Turn to Fully Left Position

      Turn the engine switch on (IG).

    2. Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

    3. Press the M1 switch while the SET switch is being pressed.

    4. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

    5. Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

    6. Press the M1 switch.

    7. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position.

      Result
      Result Proceed to
      Memory and reactivation functions on both mirrors are not normal A
      Memory and reactivation functions on driver door mirror are not normal B
      Memory and reactivation functions on front passenger door mirror are not normal C

    B

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) Click here

    C

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) Click here

    A

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

  5. CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY)


    1. Disconnect the M9 outer mirror control ECU assembly connector.

    2. Disconnect the M10 seat memory switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M10-4 (MMRY) - M9-1 (MM) Always Below 1 Ω
      M10-1 (1) - M9-2 (M1) Always Below 1 Ω
      M10-2 (2) - M9-3 (M2) Always Below 1 Ω
      M10-3 (3) - M9-4 (MMRY) Always Below 1 Ω
      M10-4 (MMRY) - Body ground Always 10 kΩ or higher
      M10-1 (1) - Body ground Always 10 kΩ or higher
      M10-2 (2) - Body ground Always 10 kΩ or higher
      M10-3 (3) - Body ground Always 10 kΩ or higher
      M10-5 (E) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT SEAT MEMORY SWITCH


    1. A01G6YZE01
      Text in Illustration
      *a

      Component without harness connected

      (Seat Memory Switch)

      Remove the seat memory switch Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (1) - 5 (E) M1 Switch off → on 10 kΩ or higher → Below 1 Ω
      2 (2) - 5 (E) M2 Switch off → on 10 kΩ or higher → Below 1 Ω
      3 (3) - 5 (E) M3 Switch off → on 10 kΩ or higher → Below 1 Ω
      4 (MMRY) - 5 (E) SET Switch off → on 10 kΩ or higher → Below 1 Ω

    NG

    REPLACE SEAT MEMORY SWITCH Click here

    OK

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) Click here

  7. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR)


    1. Replace the outer rear view mirror assembly (driver door) Click here.


    NEXT

  8. CHECK MEMORY AND REACTIVATION FUNCTION


    1. A01G8XME04
      Text in Illustration
      *a Turn to Fully Left Position

      Turn the engine switch on (IG).

    2. Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

    3. Press the M1 switch while the SET switch is being pressed.

    4. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

    5. Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

    6. Press the M1 switch.

    7. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position.

      OK
      Memory and reactivation function is normal.

    NG

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) Click here

    OK

    END (OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE)

  9. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR)


    1. Replace the outer rear view mirror assembly (front passenger door) Click here.


    NEXT

  10. CHECK MEMORY AND REACTIVATION FUNCTION


    1. A01G8XME05
      Text in Illustration
      *a Turn to Fully Left Position

      Turn the engine switch on (IG).

    2. Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

    3. Press the M1 switch while the SET switch is being pressed.

    4. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

    5. Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

    6. Press the M1 switch.

    7. Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position.

      OK
      Memory and reactivation function is normal.

    NG

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR) Click here

    OK

    END (OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) WAS DEFECTIVE)