Inspection Procedure
- FUNCTION CHECK
- Check that the driver's seat position memory functions normally.
- NG: GO TO FRONT POWER SEAT CONTROL SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )
- OK: GO TO NEXT STEP
- CHECK (MEMORY FACTION)
- Check whether the memory operation is properly carried out, the buzzer sounds when the memory has done, and the mirror facing direction is memorized.
NOTE:- If the SET, M1 and M2 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 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
- ECU DATA MONITOR
- Make a judgement of good or bad and find out a malfunctioning part by the data monitor.
DRIVER SEAT ECU
Standard:
STANDARD 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-MIRR MEN 2 Memorized in 2 MEN / NOT MEN NOTE:- 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
- OK-B: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH
- OK: GO TO NEXT STEP
- ECU 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:
STANDARD 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
NOTE:- 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"
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- OK-A: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH
- OK-B: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH
- OK: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR