DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Power Mirror Control System (W/ Memory) - Diagnostic Codes & Symptom Tests >> POWER MIRROR CONTROL SYSTEM (w/ Memory) >> Power Mirror Surface Position is not Memorized [12/2019 - 11/2023] >> Procedure

Power Mirror Surface Position is not Memorized [12/2019 - 11/2023]: Procedure

  1. READ VALUE USING GTS 
    1. 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 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 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 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 Set SW

      OK

      On the GTS screen, ON or OFF is displayed accordingly.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  2

  2. CHECK SEAT MEMORY SWITCH (SEAT POSITION MEMORY FUNCTION) 
    1. When any seat memory switch (M1 or M2) is pressed, check that the driver seat moves to the memorized position.

      Refer to OPERATION CHECK [12/2019 - 10/2022] , or refer to OPERATION CHECK [10/2022 - 11/2023]

      OK

      The driver seat moves to the memorized position.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

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

    Refer to Power Seat does not Return to Memorized Position [12/2019 - 10/2022] , or refer to Power Seat does not Return to Memorized Position [10/2022 - 11/2023]

    Result: 

    OK 

    See step  3

  3. CHECK MEMORY AND REACTIVATION FUNCTION 
    1. Turn the ignition switch to ON.
      GTY448967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Turn to Fully Left Position
    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 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

    Result: 

    A 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

    Result: 

    C 

    See step  7

    Result: 

    B 

    See step  4

  4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) (WIRE HARNESS) 
    1. Remove the outer mirror actuator assembly (driver door).

      Refer to REMOVAL [12/2019 - 11/2023]

    2. Disconnect the z17 outer mirror control ECU assembly (driver door) connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1006480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector (to Outer Mirror Control ECU Assembly (Driver Door))
      *b Front view of wire harness connector (to Outer Mirror Actuator Assembly (Driver Door))
      STANDARD RESISTANCE:

      Tester Connection Condition Specified Condition
      z17-6 (VSRL) - D-2 Always Below 1 Ω
      z17-6 (VSRL) or D-2 - Body ground Always 10 kΩ or higher
      z17-5 (VC) - D-3 Always Below 1 Ω
      z17-5 (VC) or D-3 - Body ground Always 10 kΩ or higher
      z17-13 (HSRL) - D-1 Always Below 1 Ω
      z17-13 (HSRL) or D-1 - Body ground Always 10 kΩ or higher
      z17-14 (E1) - D-4 Always Below 1 Ω
      z17-14 (E1) - D-4 Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    OK 

    See step  5

  5. REPLACE OUTER MIRROR ACTUATOR ASSEMBLY (DRIVER DOOR) 
    1. Temporarily replace the outer mirror actuator assembly (driver door) with a new or known good one.

      Refer to REMOVAL [12/2019 - 11/2023]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. CHECK MEMORY AND REACTIVATION FUNCTION 
    1. Turn the ignition switch to ON.
      GTY448967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Turn to Fully Left Position
    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 memorized fully left position.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) 

    Refer to REMOVAL [12/2019 - ]

  7. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) (WIRE HARNESS) 
    1. Remove the outer mirror actuator assembly (front passenger door).

      Refer to REMOVAL [12/2019 - 11/2023]

    2. Disconnect the z16 outer mirror control ECU assembly (front passenger door) connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1006479Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector (to Outer Mirror Control ECU Assembly (Front Passenger Door))
      *b Front view of wire harness connector (to Outer Mirror Actuator Assembly (Front Passenger Door))
      STANDARD RESISTANCE:

      Tester Connection Condition Specified Condition
      z16-6 (VSSR) - E-2 Always Below 1 Ω
      z16-6 (VSSR) or E-2 - Body ground Always 10 kΩ or higher
      z16-5 (VC) - E-3 Always Below 1 Ω
      z16-5 (VC) or E-3 - Body ground Always 10 kΩ or higher
      z16-13 (HSSR) - E-1 Always Below 1 Ω
      z16-13 (HSSR) or E-1 - Body ground Always 10 kΩ or higher
      z16-14 (E1) - E-4 Always Below 1 Ω
      z16-14 (E1) or D-4 - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) 

    Refer to REMOVAL [12/2019 - 11/2023]

    Result: 

    OK 

    See step  8

  8. 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.

      Refer to REMOVAL [12/2019 - 11/2023]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  9

  9. CHECK MEMORY AND REACTIVATION FUNCTION 
    1. Turn the ignition switch to ON.
      GTY448967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Turn to Fully Left Position
    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 memorized fully left position.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR) 

    Refer to REMOVAL [12/2019 - ]

  10. INSPECT SEAT MEMORY SWITCH 

    Refer to INSPECTION [12/2019 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE SEAT MEMORY SWITCH 

    Refer to REMOVAL [12/2019 - ]

    Result: 

    OK 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) AND BODY GROUND) 
    1. Disconnect the J23 outer mirror control ECU assembly (driver door) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J21-2 (MMRY) - J23-1 (MM) Always Below 1 Ω
      J21-3 (1) - J23-2 (M1) Always Below 1 Ω
      J21-4 (2) - J23-3 (M2) Always Below 1 Ω
      J21-1 (E) - Body ground Always Below 1 Ω
      J21-2 (MMRY) or J23-1 (MM) - Body ground Always 10 kΩ or higher
      J21-3 (1) or J23-2 (M1) - Body ground Always 10 kΩ or higher
      J21-4 (2) or J23-3 (M2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) 

    Refer to REMOVAL [12/2019 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

Diesel-Data.com