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

SYSTEM DESCRIPTION

If any of the M1, M2 or M3 seat memory switches is pressed, the outer mirror control ECU assembly (driver side) 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 mirror actuator assembly.

Tech Tips

Each outer mirror actuator 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 power switch is not on (IG).

  • The mirror surface position will not be stored if the seat memory SET switch and 2 or more of the seat memory switches (for example, M1 switch and M2 switch) 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.

WIRING DIAGRAM

B001MWNE16
B001MWNE17

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


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

      OK
      CAN communication DTC is not output.

    NG

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

    OK

  2. READ VALUE USING INTELLIGENT TESTER (SEAT MEMORY SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

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

    5. Read the Data List according to the display on the intelligent tester.

      Mirror L / Mirror R
      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

      		 -

      • *1: for LHD

      • *2: for RHD

      OK
      The intelligent tester 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 switch) is pressed, check that the driver side seat moves to the memorized position.

      OK
      The driver side 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. B001LZSE11
      Text in Illustration
      *a Turn to Left Fully

      Turn the power 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 function on RH side mirrors is not normal B
      Memory and reactivation function on LH side mirror is not normal C

    A

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

    B

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH Click here

    C

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH Click here

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


    1. for LHD:


      1. Disconnect the K7 connector from the outer mirror control ECU assembly.

      2. Disconnect the z15 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
        z15-1 (MRY) - K7-1 (MM) Always Below 1 Ω
        z15-2 (M1) - K7-2 (M1) Always Below 1 Ω
        z15-3 (M2) - K7-3 (M2) Always Below 1 Ω
        z15-4 (M3) - K7-4 (M3) Always Below 1 Ω
        z15-5 (E) - K7-13 (MSWE) Always Below 1 Ω
        z15-1 (MRY) - Body ground Always 10 kΩ or higher
        z15-2 (M1) - Body ground Always 10 kΩ or higher
        z15-3 (M2) - Body ground Always 10 kΩ or higher
        z15-4 (M3) - Body ground Always 10 kΩ or higher
        z15-1 (MRY) - Body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the J8 connector from the outer mirror control ECU assembly.

      2. Disconnect the z17 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
        z17-1 (MRY) - J8-1 (MM) Always Below 1 Ω
        z17-2 (M1) - J8-2 (M1) Always Below 1 Ω
        z17-3 (M2) - J8-3 (M2) Always Below 1 Ω
        z17-4 (M3) - J8-4 (M3) Always Below 1 Ω
        z17-5 (E) - J8-13 (MSWE) Always Below 1 Ω
        z17-1 (MRY) - Body ground Always 10 kΩ or higher
        z17-2 (M1) - Body ground Always 10 kΩ or higher
        z17-3 (M2) - Body ground Always 10 kΩ or higher
        z17-4 (M3) - Body ground Always 10 kΩ or higher
        z17-1 (MRY) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY)

    OK

  6. INSPECT SEAT MEMORY SWITCH


    1. for LHD:


      1. B001KFRE01
        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
        z15-2 (M1) - z15-5 (E) M1 Switch off → on 10 kΩ or higher → Below 1 Ω
        z15-3 (M2) - z15-5 (E) M2 Switch off → on 10 kΩ or higher → Below 1 Ω
        z15-4 (M3) - z15-5 (E) M3 Switch off → on 10 kΩ or higher → Below 1 Ω
        z15-1 (MRY) - z15-5 (E) SET Switch off → on 10 kΩ or higher → Below 1 Ω

    2. for RHD:


      1. B001L1ME01
        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
        z17-2 (M1) - z17-5 (E) M1 Switch off → on 10 kΩ or higher → Below 1 Ω
        z17-3 (M2) - z17-5 (E) M2 Switch off → on 10 kΩ or higher → Below 1 Ω
        z17-4 (M3) - z17-5 (E) M3 Switch off → on 10 kΩ or higher → Below 1 Ω
        z17-1 (MRY) - z17-5 (E) SET Switch off → on 10 kΩ or higher → Below 1 Ω

    OK

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

    NG

    REPLACE SEAT MEMORY SWITCH Click here

  7. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH


    1. Replace the outer mirror actuator assembly RH Click here.


    NEXT

  8. CHECK MEMORY AND REACTIVATION FUNCTION


    1. B001LZSE12
      Text in Illustration
      *a Turn to Left Fully

      Turn the power 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.

    OK

    END (OUTER MIRROR ACTUATOR ASSEMBLY RH WAS DEFECTIVE)

    NG

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (RH SIDE) Click here

  9. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH


    1. Replace the outer mirror actuator assembly LH Click here.


    NEXT

  10. CHECK MEMORY AND REACTIVATION FUNCTION


    1. B001LZSE14
      Text in Illustration
      *a Turn to Left Fully

      Turn the power 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.

    OK

    END (OUTER MIRROR ACTUATOR ASSEMBLY LH WAS DEFECTIVE)

    NG

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (LH SIDE) Click here