Diagnostic Procedure
- Turn ignition off. Disconnect fuel level sensor harness connector located under trunk liner. Turn ignition on. Measure voltage between ground and fuel level sensor harness connector terminal No. 5 (Red/Blue wire). See Figure . If battery voltage exists, go to step 3 . If battery voltage does not exist, go to next step.
- Check the following:
- Check for poor connection at Super Multiple Junction (SMJ) harness connector M141 terminal 48V (Red/Blue wire). See Figure and Figure .
- Check Black, 20-pin joint connector No. 15 (connector M124). Connector M124 is taped to main harness under right instrument panel speaker. See Figure and Figure .
- Check for open or short in Red/Blue wire between fuel level sensor and instrument cluster harness connector terminal No. 30 (connector M42). See Fig 1 .
Repair as necessary.
- Turn ignition off. Disconnect instrument cluster harness connectors. Check continuity between fuel level sensor harness connector terminal No. 6 (Black wire) and instrument cluster harness connector terminal No. 29 (Black/Yellow wire). See Fig 1 . Continuity should exist. Also, check circuit for short to ground and short to voltage. If problem is found, go to next step. If circuit is okay, go to step 5 .
- Check the following:
- Check for poor connection at Super Multiple Junction (SMJ) harness connector M141 terminal 49V (Black/Yellow wire). See Figure and Figure .
- Check Black, 20-pin joint connector No. 15 (connector M124). Connector M124 is taped to main harness under right instrument panel speaker. See Figure and Figure .
- Check for open or short between fuel level sensor and instrument cluster.
Repair as necessary.
- Disconnect ECM harness connector. See Figure
. Check continuity of the following:
- Red/Blue wire between fuel level sensor harness connector terminal No. 5 and ECM harness connector terminal No. 119.
- Black wire between fuel level sensor harness connector terminal No. 6 and ECM harness connector terminal No. 107.
See Figure . Continuity should exist. Also, check circuits for short to ground and short to voltage. If problem is found, go to next step. If circuits are okay, go to step 7 .
- Check the following:
- Check for poor connection at Super Multiple Junction (SMJ) harness connector F105 terminal 17T (Red/Blue wire) and 18T (Black wire). See Figure and Figure .
- Check Black, 20-pin joint connector No. 15 (connector M124). Connector M124 is taped to main harness under right instrument panel speaker. See Figure and Figure .
- Check for open or short between fuel level sensor and ECM.
Repair as necessary.
- Measure resistance between fuel level sensor/FTT sensor assembly terminals No. 5 and 6 as shown in illustration. See Figure . If resistance is as specified, go to next step. If resistance is not as specified, replace fuel level sensor.
- No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.