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Home >> Lexus >> 2002 >> LS 430 >> Repair and Diagnosis >> Body & Frame >> Seats >> Rear Left Seat Control System - Diagnosis >> Circuit Inspection >> Power Source Circuit >> Inspection Procedure

Inspection Procedure

  1. Check RR SEAT LH and MPX-B1 fuse. 
    1. CHECK:  Check continuity of RR SEAT LH and MPX-B1 fuse.
      1. OK:  Continuity
    1. NG:  Replace the failure fuse.
    2. OK:  Go to next step.
  2. Check voltage between terminals +B, SYSB and GND of rear LH seat ECU connector. 
    1. PREPARATION: 
      1. Turn the ignition switch OFF.
      2. Disconnect the rear LH seat ECU connector.
    2. CHECK:  Measure voltage between terminals +B, SYSB and GND.
      1. OK:  Voltage: 10-14 V
    1. OK:  Proceed to next circuit inspection shown on problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
    2. NG:   Go to next step.
  3. Check harness and connector between rear LH seat ECU and body ground. 
    1. OK:  Repair or replace harness or connector.
    2. NG:  Proceed to next circuit inspection shown on problem symptom table (See PROBLEM SYMPTOMS TABLE ).
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