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Last Modified: 11-27-2007 1.6 J
Service Category: Vehicle Exterior Section: Mirror (ext)
Model Year: 2008 Model: LX570 Doc ID: RM000002NON007X
Title: MIRROR (EXT): POWER MIRROR CONTROL SYSTEM: SYSTEM DESCRIPTION (2008 LX570)

Power Mirror Surface Position is not Memorized

SYSTEM DESCRIPTION

The outer rear view mirror assembly has a mirror position sensor. The position control ECU and switch sends instructions to the outer mirror control ECU. Then the outer mirror control ECU receives mirror information from the mirror position sensors, and memorizes the mirror positions.

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK DTC

(a) Use the Techstream to check if the CAN communication system is functioning normally NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM (2008 LX570) .

Result

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B
A

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.

OK

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 seat memory SET switch and 2 or more of the seat memory switches (for example, seat memory switch 1 and seat memory switch 2) are pressed simultaneously.
  • If the operation fails, the mirror facing direction will not be memorized until the seat memory 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 (for Driver Side).

OK

4.

READ VALUE USING TECHSTREAM (MIRROR POSITION MEMORY)

(a) Check the Data List for proper functioning of the mirror position memory MIRROR (EXT): POWER MIRROR CONTROL SYSTEM: DATA LIST / ACTIVE TEST (2008 LX570) .

Mirror

Tester Display

Measurement Item/Display

Normal Condition

Diagnostic Note

Mirror Memory No.1

Mirror position memorized in seat memory switch 1 / ON or OFF

ON: Memorized

OFF: Not memorized

-

Mirror Memory No.2

Mirror position memorized in seat memory switch 2 / ON or OFF

ON: Memorized

OFF: Not memorized

-

Mirror Memory No.3

Mirror position memorized in seat memory switch 3 / ON or OFF

ON: Memorized

OFF: Not memorized

-

OK:

On the Techstream screen, each item changes between ON and OFF according to above chart.

OK