W/Harness Inspection

Engine Control

P0463 Fuel Level Sensor 'A' Circuit High Input - W/Harness Inspection

Terminal and Connector inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






Signal Circuit Inspection

Check voltage
1. IG "OFF" and disconnect Fuel Sub Sender connector and ECM connector.
2. IG "ON".
3. Measure voltage between Total signal terminal of Fuel Sub Sender harness connector and chassis ground.

Specification : Approx. 0 V




4. Is the measured voltage within specification?





Check open in harness
1. IG "OFF" and disconnect Instrument cluster connector and Fuel Sub Sender connector.
2. Measure resistance between Total signal terminal of Fuel Sub Sender harness connector and Fuel input terminal of Instrument cluster harness connector.

Specification : Below 1 Ohms




3. Is the measured resistance within specification?






Ground Circuit Inspection

Check open in harness
1. IG "OFF" and disconnect Instrument cluster connector and Fuel Sender & Fuel pump Motor connector.
2. Measure resistance between ground terminal of Fuel Sender & Fuel pump Motor harness connector and Fuel ground terminal of Instrument cluster harness connector.

Specification : Below 1 Ohms




3. Is the measured resistance within specification?