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

for Preparation Click here


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.

HINT:
Each outer mirror actuator assembly has a built-in mirror vertical position sensor and mirror horizontal position sensor.

NOTICE:
  1. The mirror surface position will not be memorized if the power switch is not on (IG).
  2. 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.
  3. If the operation fails, the mirror surface position will not be memorized until the seat memory SET switch is turned off.
  4. The mirror surface position will not be memorized when the mirror is operated manually.


WIRING DIAGRAM


B275472E03


B275472E05


INSPECTION 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.

  1. Turn the power switch on (IG).

  1. Turn the intelligent tester on.

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

  1. 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. *1: for LHD
    2. *2: for RHD

    OK:
    The intelligent tester display changes between ON and OFF according to the switch operations.



NG
Go to step 5
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


    B227715E11

  1. Turn the power switch on (IG).

  1. Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

  1. Press the M1 switch while the SET switch is being pressed.

  1. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

  1. Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

  1. Press the M1 switch.

  1. 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

    Text in Illustration 
    *a
    		Turn to Left Fully



B
Go to step 7

C
Go to step 9
A

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (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

  1. 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:



      B235920E05

    1. 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

      Text in Illustration 
      *a
      		Component without harness connected
      (Seat Memory Switch)



  1. for RHD:



      B236453E03

    1. 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

      Text in Illustration 
      *a
      		Component without harness connected
      (Seat Memory Switch)



NG
REPLACE SEAT MEMORY SWITCH (Click here)
OK

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER SIDE) (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


    B227715E12

  1. Turn the power switch on (IG).

  1. Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

  1. Press the M1 switch while the SET switch is being pressed.

  1. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

  1. Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

  1. Press the M1 switch.

  1. 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.

    Text in Illustration 
    *a
    		Turn to Left Fully



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

END (OUTER MIRROR ACTUATOR ASSEMBLY RH WAS DEFECTIVE) 

9.REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH

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


NEXT


10.CHECK MEMORY AND REACTIVATION FUNCTION


    B227715E13

  1. Turn the power switch on (IG).

  1. Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

  1. Press the M1 switch while the SET switch is being pressed.

  1. Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

  1. Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

  1. Press the M1 switch.

  1. 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.

    Text in Illustration 
    *a
    		Turn to Left Fully



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

END (OUTER MIRROR ACTUATOR ASSEMBLY LH WAS DEFECTIVE)