Inspection Procedure

PERFORM ACTIVE TEST USING HAND-HELD TESTER
1. Connect the hand-held tester (with CAN VIN) to the DLC3.
2. Turn the ignition switch ON and push the hand-held tester (with CAN VIN) main switch ON.
3. Select the ACTIVE TEST on the hand-held tester to generate a control command, and then check that the power seat operates.
  Driver seat ECU:
  
  Fig 1: Driver Seat ECU - Active Test Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to next step.

The motor operates normally.

NG: Go to step 2

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
INSPECT POWER SEAT MOTOR (See INSPECTION )
NG: REPLACE POWER SEAT MOTOR

OK: Go to next step.
CHECK WIRE HARNESS (DRIVER SEAT ECU - POWER SEAT MOTOR AND BODY GROUND)
1. Disconnect the D27 ECU, P27, P28, P29, P32 and P33 motor connectors.
2. Measure the resistance of the wire harness side connectors.
  Standard:
  
  Fig 2: Terminals Resistance Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 3: Checking Wire Harness (Driver Seat ECU - Power Seat Motor And Body Ground)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )