Power Mirror Surface Position Is Not Memorized

MIRROR: POWER MIRROR CONTROL SYSTEM: Power Mirror Surface Position is not Memorized

Power Mirror Surface Position is not Memorized

SYSTEM DESCRIPTION

The outer rear view mirror assembly has a mirror position sensor. The seat ECUs send instructions to the driver side and front passenger side door ECUs. Then the door ECUs receive mirror information from the mirror position sensors, and memorize the mirror positions.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC
(a) Use the intelligent tester or Techstream to check if the CAN communication system is functioning normally.

Result





B -- GO TO CAN COMMUNICATION SYSTEM
A -- Continue to next step.
2. CHECK SEAT MEMORY SWITCH FUNCTION (SEAT POSITION MEMORY FUNCTION)
(a) Check that the driver side seat can be moved using the seat memory switch.
OK:
Driver side seat can be moved using seat memory switch.
NG -- GO TO POWER SEAT CONTROL SYSTEM
OK -- Continue to next step.
3. CHECK SEAT MEMORY SWITCH FUNCTION (REGISTRATION OF SEAT MEMORY SWITCH)
(a) Check that the memory operation is properly completed.
NOTICE:
- The seat position will not be recorded if the SET switch and 2 or more of the memory switches (for example, M1 and M2) are pressed simultaneously.
- If the operation fails, the mirror facing direction will not be memorized until the SET switch is turned off.
- The mirror facing direction will not be memorized when the mirror is operated manually.

OK:
Driver side seat position can be memorized using seat memory switch (driver side).
NG -- READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (MIRROR POSITION MEMORY)
OK -- SYSTEM IS OK
4. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (MIRROR POSITION MEMORY)
(a) Check the DATA LIST for proper functioning of the mirror position memory.
(1) Intelligent tester

D-DOOR





P-DOOR





(2) Techstream

Driver Door





Passenger Door





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

Result





C -- REPLACE FRONT DOOR ECU RH
B -- REPLACE FRONT DOOR ECU LH
A -- REPLACE FRONT POWER SEAT SWITCH LH