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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 453 (Rear Left Seat Control System - Diagnosis) >> Circuit Inspection >> Headrest Motor and Position Sensor Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

In case of using the LEXUS hand-held tester, start the inspection from step 1 and in case of not using the LEXUS hand-held tester, start from step  2.

  1. Check headrest power seat motor using LEXUS hand-held tester. 

    PREPARATION: 

    Connect the LEXUS hand-held tester to the DLC3.

    CHECK: 

    Check the headrest power seat motor can be operated in ACTIVE TEST.

    1. OK : Proceed to next circuit Inspection shown on problem symptom table (See  PROBLEM SYMPTOMS TABLE  ). 
    2. NG : Go to next step. 
  2. Check headrest power seat motor (See  INSPECTION  ). 
    1. NG : Replace motor. 
    2. OK : Go to next step. 
  3. Check position sensor (See  INSPECTION  ). 
    1. NG : Replace power seat motor. 
    2. OK : Go to next step. 
  4. Check harness and connectors between rear LH seat ECU and headrest motor and position sensors, sensors and body ground (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. OK : Repair or replace harness or connector. 
    2. NG : Check and replace rear LH seat ECU (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
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