*CHECKING THE FUEL PRESSURE SOLENOID CIRCUITS
For a complete wiring diagram Refer to Section 8W
| Possible Causes |
| FUEL PRESSURE SOLENOID RESISTANCE |
| OPEN CIRCUITS |
Diagnostic Test
1. OPEN CIRCUITS
Turn the ignition off.
Disconnect the Fuel Pressure Solenoid 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 both Fuel Pressure Solenoid circuits between the ECM harness connector and the Fuel Pressure Solenoid harness connector.
Is the resistance below 10.0 ohms for both measurements?
Yes
- Go To2
No
- Repair open circuit(s) as necessary.
- Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
2. FUEL PRESSURE SOLENOID RESISTANCE
Measure the resistance of the Fuel Pressure Solenoid.
Is the resistance between 3.5 and 5.5 ohms?
Yes
- Test Complete.
No
- Replace the Fuel Pressure Solenoid.
- Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).