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

DESCRIPTION

When the seat memory M1 or M2 switch is pressed, the multiplex network door ECU front LH (driver door ECU) sends a memory switch status signal to the position control ECU (for driver side). Then the position control ECU sends the following to the door ECU front LH and RH: 1) a memory M1 or M2 memory recall signal, and 2) a driver and front passenger seat mirror position memory recall signal recorded in memory. When the door ECU front LH and RH receive the memory M1 or M2 memory recall signal, and then receive the driver and front passenger seat mirror position memory recall signal within 1.2 seconds, the door ECU front LH and RH activate the mirror control motors to move the mirrors to the previously recorded positions.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK SEAT MEMORY SWITCH FUNCTION (SEAT POSITION MEMORY FUNCTION)
(a) Check that the driver side seat can be moved using the driving position memory switch.
OK:
Driver side seat can be moved using driving position memory switch.
NG -- GO TO FRONT POWER SEAT CONTROL SYSTEM
OK -- Continue to next step.
2. CHECK SEAT MEMORY SWITCH FUNCTION (REGISTRATION OF SEAT MEMORY SWITCH)
(a) Check that the memory operation is properly completed. A buzzer sounds when the door mirror position and mirror facing direction are memorized.
NOTICE:
- If the SET, M1 and M2 switches are pressed simultaneously, the mirror facing direction will not be memorized.
- 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 can be memorized using seat memory switch (for driver side).
OK -- NORMAL
NG -- Continue to next step.
3. READ VALUE USING TECHSTREAM (SEAT MEMORY FUNCTION)
(a) Check the Data List for proper functioning of the seat memory function.

Driver Seat





OK:
On tester screen, each item changes between MEM and NOT MEM according to above chart.
OK -- REPLACE POSITION CONTROL ECU (for Driver Side)
NG -- Continue to next step.
4. CHECK WIRE HARNESS (SEAT MEMORY SWITCH - MULTIPLEX NETWORK DOOR ECU FRONT LH [DRIVER DOOR ECU])




(a) Disconnect the D20 switch connector.
(b) Disconnect the D18 ECU connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH