Checking the Fuel Pressure Sensor Circuits

CHECKING THE FUEL PRESSURE SENSOR CIRCUITS

Checking The Fuel Pressure Sensor Circuits:

POSSIBLE CAUSES
- Open circuits

DIAGNOSTIC TEST

1. OPEN CIRCUITS




Turn the ignition off.
Disconnect the Fuel Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires. Repair as necessary.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Repair as necessary.
Measure the resistance of each of the three Fuel Pressure Sensor circuits between the ECM harness connector and the Fuel Pressure Sensor harness connector.

Q: Is the resistance below 10.0 ohms for each measurement?

YES: Test Complete.
NO: Repair open circuit(s) as necessary.
Perform the ECM Verification Test Ver. 1. ECM Verification Test