POWER MIRROR CONTROL SYSTEM Power Mirror Surface Position is not Memorized

DTC Code DTC Name
Power Mirror Surface Position is not Memorized

SYSTEM DESCRIPTION

If the M1 or M2 seat memory switch is pressed, the outer mirror control ECU assembly LH detects the switch operation and sends the seat memory switch signal to the main body ECU (multiplex network body ECU) via CAN communication. Upon 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

B248462E05

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    1. Check if a CAN communication DTC is output.

      Click hereClick here

      Result

      Result

      Proceed to

      DTC is not output

      A

      DTC is output

      B
    B

    GO TO CAN COMMUNICATION SYSTEM

    Click here

    A

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

    1. Using the intelligent tester, read the Data List.

      Click here

      Body Electrical > Mirror L > Data List

      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 Set SW

      Seat memory switch SET signal

      ON or OFF

      ON: Seat memory switch SET on

      OFF: Seat memory switch SET off

      -

      OK

      On intelligent tester screen, each item changes between ON and OFF according to above chart.

      Result

      Result

      OK

      NG
    NG

    INSPECT SEAT MEMORY SWITCHClick here

    OK

  3. CHECK SEAT MEMORY SWITCH FUNCTION (SEAT POSITION MEMORY FUNCTION)

    1. Perform a seat memory operation properly.

      Click here

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

      OK

      Driver side seat moves to memorized position.

      Result

      Result

      OK

      NG
    NG

    GO TO FRONT POWER SEAT CONTROL SYSTEM

    Click here

    OK

  4. READ VALUE USING INTELLIGENT TESTER (MIRROR POSITION MEMORY)

    1. Using the intelligent tester, read the Data List.

      Click here

      Body Electrical > Mirror L > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Mirror Memory No.1

      Mirror position memorized in memory switch M1

      OFF or ON

      ON: Memorized

      OFF: Not memorized

      -

      Mirror Memory No.2

      Mirror position memorized in memory switch M2

      OFF or ON

      ON: Memorized

      OFF: Not memorized

      -

      Body Electrical > Mirror R > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Mirror Memory No.1

      Mirror position memorized in memory switch M1

      OFF or ON

      ON: Memorized

      OFF: Not memorized

      -

      Mirror Memory No.2

      Mirror position memorized in memory switch M2

      OFF or ON

      ON: Memorized

      OFF: Not memorized

      -

      OK

      "ON" is displayed on intelligent tester.

      Result

      Result

      Proceed to

      OK

      A

      NG (for Driver Side)

      B

      NG (for Passenger Side)

      C
    A

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click here

    B

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH

    Click here

    C

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH

    Click here

  5. INSPECT SEAT MEMORY SWITCH

    1. B199457C01

      Remove the seat memory switch.

      Click here

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      3 (1) - 1 (E)

      Seat memory switch M1 pressed

      Below 1 Ω

      4 (2) - 1 (E)

      Seat memory switch M2 pressed

      Below 1 Ω

      2 (MMRY) - 1 (E) Seat memory

      Seat memory switch SET pressed

      Below 1 Ω

      Result

      Result

      OK

      NG
    NG

    REPLACE SEAT MEMORY SWITCH

    Click here

    OK

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

    1. Disconnect the K8 ECU connector.

    2. Disconnect the k2 switch connector.

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      K8-2 (M1) - k2-3 (1)

      Always

      Below 1 Ω

      K8-3 (M2) - k2-4 (2)

      Always

      Below 1 Ω

      K8-1 (MM) - k2-2 (MMRY)

      Always

      Below 1 Ω

      K8-13 (MSWE) - k2-1 (E)

      Always

      Below 1 Ω

      K8-2 (M1) - Body ground

      Always

      10 kΩ or higher

      K8-3 (M2) - Body ground

      Always

      10 kΩ or higher

      K8-1 (MM) - Body ground

      Always

      10 kΩ or higher

      K8-13 (MSWE) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    OK

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR