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Home >> Lexus >> 2000 >> SC 400 >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Panels >> Component Tests >> Integration Relay >> Seat Belt Warning System

Seat Belt Warning System

  1. Disconnect 12-pin relay connector. Connect positive lead from battery to relay terminals No. 1 and 7. Connect a 3.4-watt bulb between terminals No. 7 and 9. Connect negative lead from battery to terminal No. 10. See STEP 1. See Figure. Bulb should illuminate and chime should sound for 4-8 seconds.
  2. Repeat step 1)  , but connect negative lead from battery to terminal No. 8 while light and chime are active. See STEP 2. See Figure. Chime should stop. Replace integration relay if it does not test as specified.
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