Inspection Procedure

For circuit wiring diagram, see Fig 1.

1. Check that the motor, which does not operate by the seat memory switch, can operate by operating the power seat switch for 10 seconds or more:
   • When the reclining motor does not operate, go to step  2.
   • When the slide motor does not operate, go to step  2.
   • When the rear vertical motor does not operate, go to step  2.
   • When the front vertical motor does not operate, go to step  2.
   If the results are OK, replace the motor which does not operate by the seat memory switch with a new one.
2. Inspect the power seat motor. See POWER SEAT INSPECTION . If the results are OK, go to the next step. If the results are not good repair or replace the power seat motor. See POWER SEAT MOTOR  under REMOVAL & INSTALLATION.
3. Check the power seat motor and seat position control ECU wiring harness. See Fig 2. If the continuity is OK, check and replace the position control ECU assembly. See POSITION CONTROL ECU ASSEMBLY  under REMOVAL & INSTALLATION. If continuity is not good, repair or replace the harness and connector.

Fig 1: Power Seat Motor Circuit Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Inspecting Power Seat Motor & Seat Position Control ECU Wiring Harness Continuity

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002