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Test 8B - Repairing Fuel Gauge Warning Lamp

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagrams, see WIRING DIAGRAMS  . Perform TEST VER-1 after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector.
  1. Turn ignition switch to OFF position. If problem exists in fuel warning lamp only, replace Body Control Module (BCM). If problem does not exist in fuel warning lamp only, go to next step.
  2. If vehicle is equipped with Flexible Fuel Module (FFM), go to TEST 8C. FFM is located in trunk behind trunk liner on rear passenger seat lower crossmember. If vehicle is not equipped with FFM, go to next step.
  3. Turn ignition switch to OFF position. Access fuel pump connector. Connector is located on top of fuel tank and is accessible by removing access cover in floor of trunk. Disconnect fuel pump connector. Turn ignition switch to ON position. Go to next step.
  4. Connect jumper wire between fuel pump connector terminals No. 2 (Dark Blue wire) and No. 4 (Black/Tan wire) Using DRB, read fuel level status. If DRB displays 0.0 VOLT, replace fuel level sensor. If DRB does not display 0.0 VOLT, disconnect jumper wire. Go to next step.
  5. Connect jumper wire between fuel pump connector terminal No. 2 (Dark Blue wire) and ground. If DRB displays 0.0 VOLT, repair open Dark Blue wire. If DRB does not display 0.0 Volt, disconnect jumper wire. Go to next step.
  6. With BCM connectors connected, connect jumper wire between BCM Gray connector terminal No. 23 (Dark Blue wire) and ground. If DRB displays 0.0 VOLT, repair open Dark Blue wire. If DRB does not display 0.0 VOLT, disconnect jumper wire. Go to next step.
  7. Turn ignition switch to OFF position. Disconnect and inspect BCM Gray connector. Repair connector as necessary. If connector is okay, replace BCM.
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