Instrument Cluster Test 12A - Fuel Gauge Led Malfunction
NOTE:
Perform INSTRUMENT CLUSTER TEST 1A
before proceeding with this test. For connector terminal identification, refer to CONNECTOR IDENTIFICATION
. For wiring diagrams, refer to WIRING DIAGRAMS
. Perform, after each repair, VERIFICATION TEST VER-1A - BODY VERIFICATION TEST
.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Ensure fuel tank is not empty. If fuel gauge always reads empty, go to INSTRUMENT CLUSTER TEST 12C . If fuel gauge reads between empty and full, go to INSTRUMENT CLUSTER TEST 12B . If fuel gauge always reads full, go to next step.
- Turn ignition off. Remove rear seat cushion. Disconnect fuel pump harness connector. Using scan tool, select BODY, then SENSORS. Turn ignition on. Using scan tool, read fuel level voltage. If voltage is 9 volts or less, go to next step. If voltage is greater than 9 volts, replace fuel tank sending unit.
- Turn ignition off. Disconnect Body Control Module (BCM) Blue connector C4. BCM is mounted to junction block located behind left end cap of instrument panel. See Figure in CHIME TEST 2A. Using external ohmmeter, measure resistance between ground and terminal No. 7 (Dark Blue) on Blue harness connector. If resistance is less than 5 ohms, repair Dark Blue wire for short to ground. If resistance is 5 ohms or greater, replace BCM.