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Test 38A - Repairing Seat Belt Warning Lamp Problem

NOTE: For connector terminal identification, see CONNECTOR  IDENTIFICATION. For wiring diagram, see WIRING DIAGRAMS  . Perform TEST VER-1 after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Using DRB, stop sequential lamp test. Ensure left front seat belt is fastened. Using DRB, read seat belt switch status. If DRB displays SEAT BELT : OPEN, go to step 4). If DRB does not display SEATBELT : OPEN, go to next step.
  2. Disconnect seat belt switch connector. Check, clean and repair connections as needed. If DRB displays SEAT BELT : OPEN, replace seat belt switch. If DRB does not display SEAT BELT : OPEN, go to next step.
  3. Turn ignition switch to OFF position. Disconnect Body Control Module (BCM) Black connector. Check, clean and repair connections as needed. Put DRB in ohmmeter mode. Measure resistance at BCM Black connector terminal No. 3 (Light Green/Red wire). If resistance is less than 5 ohms, repair Light Green/Red wire between BCM Black connector and seat belt switch connector for short to ground. If resistance is more than 5 ohms, replace BCM.
  4. If DRB displays SEAT BELT : OPEN in step 1), unfasten left front seat belt. If DRB displays SEAT BELT : CLOSED, replace instrument cluster. If DRB does not display SEAT BELT : CLOSED, go to next step.
  5. Disconnect seat belt switch connector. Check, clean and repair connections as needed. Connect jumper wire between seat belt switch connector Light Green/Red wire and Black/Orange wire. If DRB displays SEAT BELT : CLOSED, replace left front seat belt switch. If DRB does not display SEAT BELT : CLOSED, go to next step.
  6. Connect jumper wire between seat belt switch connector Light Green/Red wire and ground. If DRB displays SEAT BELT : CLOSED, repair seat belt switch connector Black/Orange wire for open to ground. If DRB does not display SEAT BELT : CLOSED, go to next step.
  7. Disconnect jumper wire. Access BCM, located behind right kick panel. With BCM connectors connected, connect jumper wire between BCM Black connector terminal No. 3 (Light Green/Red wire) and ground. If DRB displays SEAT BELT : CLOSED, repair open Light Green/Red wire. If DRB does not display SEAT BELT : CLOSED, replace BCM.
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