W/Harness Inspection

Engine Control

P2065 Fuel Level Sensor 'B' Circuit - 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 Fuel level signal B terminal of ECM harness connector and chassis ground.

Specification : Approx. 11 - 12 V




4. Is the measured voltage within specification?





Check shorted in harness
1. IG "OFF" and disconnect Instrument cluster connector, Fuel Sender & Fuel Pump Motor connector, Fuel Sub Sender connector, and ECM connector.
2. Measure resistance between total and middle signal terminals of ECM harness connector.

Specification : Below 1 Ohms




3. Is the measured resistance within specification?





Check short to battery in harness
1. IG "OFF" and disconnect Instrument cluster connector, Fuel Sender & Fuel Pump Motor connector, Fuel Sub Sender connector, and ECM connector.
2. IG "ON".
3. Measure voltage between middle signal terminal of ECM harness connector and chassis ground.

Specification : Approx. 0 V




4. Is the measured voltage within specification?