Inspection Procedure
- FUNCTION CHECK
- Check that the driver's seat position memory functions normally.
- NG: GO TO FRONT POWER SEAT CONTROL SYSTEM (See FRONT POWER SEAT CONTROL SYSTEM (W/MEMORY) )
- OK: GO TO NEXT STEP
- CHECK (MEMORY FUNCTION)
- Check whether the memory operation is properly carried out, the buzzer sounds when the door mirror position has memorized, and the mirror facing direction is memorized.
NOTE:- If the SET, M1 and M2 switches are pressed simultaneously, the mirror facing direction is not memorized.
- After the operation has failed, the mirror facing direction is not memorized unless the SET switch is once turned off.
- The mirror facing direction is not memorized while the mirror is operated manually.
- OK: SYSTEM OK
- NG: GO TO NEXT STEP
- USE LEXUS HAND-HELD TESTER
- NO: Go to step 5
- YES: GO TO NEXT STEP
- READ VALUE OF LEXUS HAND-HELD TESTER
- Using the hand-held tester, check the driving position memory switch condition by the data monitor.
Standard:
Driver seat ECU
SPECIFIED CONDITION CHARTItem Condition Specified condition D-MIRR MEN 1 Memorized in 1 MEN/NOT MEN D-MIRR MEN 2 Memorized in 2 MEN/NOT MEN P-MIRR MEN 1 Memorized in 1 MEN/NOT MEN P-MIRRMEN2 Memorized in 2 MEN/NOT MEN HINT:
- In case of the driver's side, proceed to OK-A
- In case of the passenger's side, proceed to OK-B
- NG: REPLACE SEAT MEMORY SWITCH
- OK-A: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
- OK-B: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
- OK: GO TO NEXT STEP
- Using the hand-held tester, check the driving position memory switch condition by the data monitor.
- CHECK WIRE HARNESS (SEAT MEMORY SWITCH - DOOR ECU)
- Disconnect the seat memory switch and door ECU connectors.
- Check the continuity between each terminal of the seat memory switch vehicle's side connector and the door ECU vehicle's side connector (See
TERMINALS OF ECU ).
Standard:
SPECIFIED CONDITION CHARTTerminals (Memory switch - Door ECU) Specified condition D20-1 <--> D18-23 (E <--> MSWE) Continuity D20-4 <--> D18-15 (M2 <--> M2) Continuity D20-3 <--> D18-16 (M1 <--> M1) Continuity D20-2 <--> D18-24 (MRY <--> MM) Continuity
HINT:
- In case of the driver's side wire harness, proceed to OK-A.
- In case of the passenger's side wire harness, proceed to OK-B.
- OK-A: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
- OK-B: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
- OK: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR