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

DESCRIPTION

If any of 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.

WIRING DIAGRAM


  1. for LHD

    A002138E16

  2. for RHD

    A002138E14

CAUTION / NOTICE / HINT

Note


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

    Click here

  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

  • The mirror surface position will not be memorized if the power 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.

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 power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Mirror L*1 or Mirror R*2 / Data List.


      • *1: for LHD

      • *2: for RHD

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


      Body Electrical > Mirror L > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Seat Memory Switch1 Seat memory switch M1 switch signal OFF or ON

      OFF: Seat memory switch M1 switch off

      ON: Seat memory switch M1 switch on

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

      OFF: Seat memory switch M2 switch off

      ON: Seat memory switch M2 switch on

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

      OFF: Seat memory switch M3 switch off

      ON: Seat memory switch M3 switch on

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

      OFF: Seat memory switch SET switch off

      ON: Seat memory switch SET switch on

      		 -

      Body Electrical > Mirror L > Data List
      Tester Display
      Seat Memory Switch1
      Seat Memory Switch2
      Seat Memory Switch3
      Seat Memory Set SW

      Body Electrical > Mirror R > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Seat Memory Switch1 Seat memory switch M1 switch signal OFF or ON

      OFF: Seat memory switch M1 switch off

      ON: Seat memory switch M1 switch on

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

      OFF: Seat memory switch M2 switch off

      ON: Seat memory switch M2 switch on

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

      OFF: Seat memory switch M3 switch off

      ON: Seat memory switch M3 switch on

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

      OFF: Seat memory switch SET switch off

      ON: Seat memory switch SET switch on

      		 -

      Body Electrical > Mirror R > Data List
      Tester Display
      Seat Memory Switch1
      Seat Memory Switch2
      Seat Memory Switch3
      Seat Memory Set SW
      OK
      On the GTS screen, ON or OFF is displayed for each item according to the table above.
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT SEAT MEMORY SWITCH Click here

    OK

  2. 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.

      Click here

      OK
      The driver seat moves to the memorized position.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  3. CHECK MEMORY AND REACTIVATION FUNCTION


    1. A0021Q5C13
      *a Turn to Fully Left Position

      Turn the power switch on (IG).

    2. Using the multiplex network master 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 multiplex network master 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 memorized 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

    A

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

    C

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY (FRONT PASSENGER DOOR) Click here

    B

  4. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY (DRIVER DOOR)


    1. Temporarily replace the outer mirror actuator assembly (driver door) with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK MEMORY AND REACTIVATION FUNCTION


    1. A0021Q5C13
      *a Turn to Fully Left Position

      Turn the power switch on (IG).

    2. Using the multiplex network master 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 multiplex network master 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 memorized fully left position.

      Result
      Proceed to
      OK
      NG

    OK

    END (OUTER MIRROR ACTUATOR ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE)

    NG

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

  6. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY (FRONT PASSENGER DOOR)


    1. Temporarily replace the outer mirror actuator assembly (front passenger door) with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  7. CHECK MEMORY AND REACTIVATION FUNCTION


    1. A0021Q5C13
      *a Turn to Fully Left Position

      Turn the power switch on (IG).

    2. Using the multiplex network master 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 multiplex network master 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 memorized fully left position.

      Result
      Proceed to
      OK
      NG

    OK

    END (OUTER MIRROR ACTUATOR ASSEMBLY (FRONT PASSENGER DOOR) WAS DEFECTIVE)

    NG

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

  8. INSPECT SEAT MEMORY SWITCH


    1. Remove the seat memory switch (driver door).

      Click here

    2. Inspect the seat memory switch (driver door).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SEAT MEMORY SWITCH Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) - BODY GROUND)


    1. Disconnect the N24*1 or N9*2 outer mirror control ECU assembly (driver door) connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the N20*1 or N5*2 seat memory switch connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      N24-1 (MM) - N20-4 (MRY) Always Below 1 Ω
      N24-1 (MM) - Body ground Always 10 kΩ or higher
      N20-4 (MRY) - Body ground Always 10 kΩ or higher
      N24-2 (M1) - N20-1 (M1) Always Below 1 Ω
      N24-2 (M1) - Body ground Always 10 kΩ or higher
      N20-1 (M1) - Body ground Always 10 kΩ or higher
      N24-3 (M2) - N20-2 (M2) Always Below 1 Ω
      N24-3 (M2) - Body ground Always 10 kΩ or higher
      N20-2 (M2) - Body ground Always 10 kΩ or higher
      N24-4 (M3) - N20-3 (M3) Always Below 1 Ω
      N24-4 (M3) - Body ground Always 10 kΩ or higher
      N20-3 (M3) - Body ground Always 10 kΩ or higher
      N20-5 (E) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      N9-1 (MM) - N5-4 (MRY) Always Below 1 Ω
      N9-1 (MM) - Body ground Always 10 kΩ or higher
      N5-4 (MRY) - Body ground Always 10 kΩ or higher
      N9-2 (M1) - N5-1 (M1) Always Below 1 Ω
      N9-2 (M1) - Body ground Always 10 kΩ or higher
      N5-1 (M1) - Body ground Always 10 kΩ or higher
      N9-3 (M2) - N5-2 (M2) Always Below 1 Ω
      N9-3 (M2) - Body ground Always 10 kΩ or higher
      N5-2 (M2) - Body ground Always 10 kΩ or higher
      N9-4 (M3) - N5-3 (M3) Always Below 1 Ω
      N9-4 (M3) - Body ground Always 10 kΩ or higher
      N5-3 (M3) - Body ground Always 10 kΩ or higher
      N5-5 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR