Inspection Procedure
- INSPECT POWER SEAT CUSHION SWITCH
- Remove the power seat cushion switch.
- Measure the resistance of the switch.
Standard:
TESTER CONNECTION AND SPECIFIED CONDITIONTester Connection Switch Condition Specified Condition 1 (CSNF) - 4 (E) FRONT Below 1 Ω 1 (CSNF) - 4 (E), 2 (CSNR) - 4 (E) OFF 10 kΩ or higher 2 (CSNR) - 4 (E) REAR Below 1 Ω Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE POWER SEAT CUSHION SWITCH
OK: GO TO NEXT STEP
- CHECK WIRE HARNESS (POWER SEAT CONTROL SWITCH - DRIVER SEAT ECU AND BODY GROUND)
- Disconnect D28 ECU and P22 switch connectors.
- Measure the resistance of the wire harness side connectors.
Standard:
TESTER CONNECTION AND SPECIFIED CONDITIONTester connection Specified condition D28-4 (CSNR) - P22-2 (CSNR) Below 1 Ω D28-12 (CSNF) - P22-1 (CSNF) Below 1 Ω P22-4 (E) - Body ground Below 1 Ω Fig 2: Identifying P22 Power Seat Control Switch Connector Terminals And D28 Driver Seat ECU Connector TerminalsCourtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR AND REPLACE HARNESS AND CONNECTOR
OK:
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE