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

SYSTEM DESCRIPTION

If either the M1 or M2 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.

WIRING DIAGRAM

B000LD1E18

INSPECTION PROCEDURE

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 of the 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 turned off.

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

  • The power mirror control system (w/ Memory) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power mirror control system (w/ Memory) after confirming that the communication systems are functioning properly Click here.

Tech Tips

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

PROCEDURE


  1. READ VALUE USING GTS


    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

      		 Not applicable
      Seat Memory Set SW Seat memory switch SET signal/ ON or OFF

      ON: Seat memory switch SET on

      OFF: Seat memory switch SET off

      		 -

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

      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

  2. CHECK SEAT MEMORY SWITCH FUNCTION


    1. When any seat memory switch (M1 or M2 switch) 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

  3. CHECK MEMORY AND REACTIVATION FUNCTION


    1. B000HTAE03
      Text in Illustration
      *a Turn to Left Fully

      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

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


    1. Disconnect the K12 connector from the outer mirror control ECU assembly.

    2. Disconnect the K13 connector from the seat memory switch.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K13-2 (MRY) - K12-1 (MM) Always Below 1 Ω
      K13-4 (M1) - K12-2 (M1) Always Below 1 Ω
      K13-3 (M2) - K12-3 (M2) Always Below 1 Ω
      K13-1 (E) - K12-4 (MSWE) Always Below 1 Ω
      K13-2 (MRY) - Body ground Always 10 kΩ or higher
      K13-4 (M1) - Body ground Always 10 kΩ or higher
      K13-3 (M2) - Body ground Always 10 kΩ or higher
      K13-1 (E) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT SEAT MEMORY SWITCH


    1. Remove the seat memory switch Click here.

    2. Inspect the seat memory switch Click here.


    NG

    REPLACE SEAT MEMORY SWITCH Click here

    OK

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

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


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


    NEXT

  7. CHECK MEMORY AND REACTIVATION FUNCTION


    1. B000HTAE04
      Text in Illustration
      *a Turn to Left Fully

      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)

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


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


    NEXT

  9. CHECK MEMORY AND REACTIVATION FUNCTION


    1. B000HTAE05
      Text in Illustration
      *a Turn to Left Fully

      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)