Power Mirror Surface Position Is Not Memorized

MIRROR (EXT): POWER MIRROR CONTROL SYSTEM: Power Mirror Surface Position is not Memorized
- 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 rear view mirror assembly.

HINT
Each outer rear view mirror has a built-in mirror vertical position sensor and mirror horizontal position sensor.

NOTICE:
* 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

INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Use the Techstream to check if the CAN communication system is functioning normally How to Proceed With Troubleshooting.

OK:

CAN communication DTC is not output.

NG -- GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) CAN Communication System
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (SEAT MEMORY SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Mirror L / Data List.

(e) Read the Data List according to the display on the Techstream.

Mirror L

OK:

The Techstream display changes between ON and OFF according to the switch operations.

NG -- CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY)
OK -- Continue to next step.

3. CHECK SEAT MEMORY SWITCH FUNCTION

(a) 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 Problem Symptoms Table
OK -- Continue to next step.

4. CHECK MEMORY AND REACTIVATION FUNCTION

(a) Turn the power switch on (IG).

(b) Using the outer mirror switch assembly, turn the mirror surface to the fully left position.

(c) Press the M1 switch while the SET switch is being pressed.

(d) Check that the buzzer sounds for 0.5 seconds and the mirror surface position is memorized.

(e) Using the outer mirror switch assembly, turn the mirror surface to the fully right position.

(f) Press the M1 switch.

(g) Check that the buzzer sounds for 0.1 seconds and the outer mirror automatically moves to the recorded fully left position.

Result:

Text in Illustration

B -- REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

C -- REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

A -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal

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

(a) Disconnect the J3 connector from the outer mirror control ECU assembly.

(b) Disconnect the J5 connector from the seat memory switch.

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

Standard Resistance:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (SEAT MEMORY SWITCH - OUTER MIRROR CONTROL ECU ASSEMBLY)
OK -- Continue to next step.

6. INSPECT SEAT MEMORY SWITCH

(a) Remove the seat memory switch Removal.

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

Standard Resistance:

Text in Illustration

NG -- REPLACE SEAT MEMORY SWITCH Removal

OK -- REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER SIDE) Removal

7. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

(a) Replace the outer rear view mirror assembly RH Removal.

NEXT -- Continue to next step.

8. CHECK MEMORY AND REACTIVATION FUNCTION

(a) Turn the power switch on (IG).

NG -- REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER SIDE) Removal

OK -- END (OUTER REAR VIEW MIRROR ASSEMBLY RH WAS DEFECTIVE)

9. REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

(a) Replace the outer rear view mirror assembly LH Removal.

NEXT -- Continue to next step.

10. CHECK MEMORY AND REACTIVATION FUNCTION

(a) Turn the power switch on (IG).

NG -- REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER SIDE) Removal

OK -- END (OUTER REAR VIEW MIRROR ASSEMBLY LH WAS DEFECTIVE)