Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC

Use the intelligent tester or Techstream to check if the CAN communication system is functioning normally.

Result

RESULT CHART

Result	Proceed to
CAN DTC is not output	A
CAN DTC is output	B

B: GO TO CAN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: Go to next Step

CHECK SEAT MEMORY SWITCH FUNCTION (SEAT POSITION MEMORY FUNCTION)
1. 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 (See HOW TO PROCEED WITH TROUBLESHOOTING )
  
  OK: Go to next Step
CHECK SEAT MEMORY SWITCH FUNCTION (REGISTRATION OF SEAT MEMORY SWITCH)
1. Check that the memory operation is properly completed
  NOTE:
  - 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: Go to step 4
  
  OK: SYSTEM IS OK

READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (MIRROR POSITION MEMORY)

Check the DATA LIST for proper functioning of the mirror position memory

Intelligent tester

D-DOOR

DIAGNOSTIC NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
MIRROR MEM 1	Driver side mirror position memorized in seat memory switch M1/ON or OFF	ON Memorized OFF Not memorized	-
MIRROR MEM 2	Driver side mirror position memorized in seat memory switch M2 / ON or OFF	ON Memorized OFF Not memorized	-
MIRROR MEM 3	Driver side mirror position memorized in seat memory switch M3 / ON or OFF	ON Memorized OFF Not memorized	-

P-DOOR

DIAGNOSTIC NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
MIRROR MEM 1	Passenger side mirror position memorized in seat memory switch M1 / ON or OFF	ON Memorized OFF Not memorized	-
MIRROR MEM 2	Passenger side mirror position memorized in seat memory switch M2 / ON or OFF	ON Memorized OFF Not memorized	-
MIRROR MEM 3	Passenger side mirror position memorized in seat memory switch M3 / ON or OFF	ON Memorized OFF Not memorized	-

Techstream

Driver Door

DIAGNOSTIC NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
Mirror Memory No 1	Driver side mirror position memorized in seat memory switch M1 / ON or OFF	ON Memorized OFF Not memorized	-
Mirror Memory No 2	Driver side mirror position memorized in seat memory switch M2 / ON or OFF	ON Memorized OFF Not memorized	-
Mirror Memory No 3	Driver side mirror position memorized in seat memory switch M3 / ON or OFF	ON Memorized OFF Not memorized	-

Passenger Door

DIAGNOSTIC NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
Mirror Memory No 1	Passenger side mirror position memorized in seat memory switch M1 / ON or OFF	ON Memorized OFF Not memorized	-
Mirror Memory No 2	Passenger side mirror position memorized in seat memory switch M2 / ON or OFF	ON Memorized OFF Not memorized	-
Mirror Memory No 3	Passenger side mirror position memorized in seat memory switch M3 / ON or OFF	ON Memorized OFF Not memorized	-

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

Result

RESULT CHART

Result	Proceed to
Operates normally	A
Driver side does not operate normally	B
Passenger side does not operate normally	C

B: REPLACE FRONT DOOR ECU LH (See ON-VEHICLE INSPECTION )

C: REPLACE FRONT DOOR ECU RH (See ON-VEHICLE INSPECTION )

A: REPLACE FRONT POWER SEAT SWITCH LH (See DISASSEMBLY )