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Home >> Lexus >> 2003 >> ES 300 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Combination Meter - Diagnosis >> Seat Belt Warning Lamp For Driver's Seat Does Not Operate >> Inspection Procedure

Inspection Procedure

  1. CHECK COMBINATION METER ASSY 
    1. Check driver seat belt warning operation.
      1. Remove the combination meter assy with connectors still connected.
      2. Ground the terminal C7-5 of combination meter assy connector.
      3. Check that the driver seat belt warning light lights up.

      OK: Warning light lights up. 

    1. NG: CHECK AND REPLACE COMBINATION METER ASSY 
      Fig 1: Identifying Combination Meter Assy Connector Terminal C7-5
      G03372830Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. OK: Go to next step. 
  2. CHECK HARNESS AND CONNECTOR(BETWEEN AIRBAG SENSOR ASSY CENTER AND FRONT SEAT INNER BELT ASSY LH) 
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  3. INSPECT FRONT SEAT INNER BELT ASSY LH 
    1. Check resistance.
      1. Check resistance between terminals 1 and 4 of front seat inner belt assy LH.

        Standard resistance: 

        FRONT SEAT INNER BELT ASSY LH TERMINALS STANDARD RESISTANCE

        Condition Resistance (Ω)
        Seat belt is fastened 300
        Seat belt is unfastened 1,330
    1. NG: REPLACE FRONT SEAT INNER BELT ASSY LH 
      Fig 2: Identifying Front Seat Inner Belt Assy LH Terminals
      G03372831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. OK: Go to next step. 
  4. CHECK HARNESS OR CONNECTOR(BETWEEN AIRBAG SENSOR ASSY CENTER AND FRONT SEAT INNER BELT ASSY LH) 
    1. NG: REPAIR OR REPLACE HARNESS CONNECTOR 
    2. OK: Go to next step. 
  5. CHECK HARNESS AND CONNECTOR(BETWEEN FRONT SEAT INNER BELT ASSY LH AND BODY GROUND) 
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: CHECK AND REPLACE AIR BAG SENSOR ASSY CENTER 
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