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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 490 (Powertrain Diagnostic Procedures - Diesel) >> Diagnostic Information And Procedures >> DRIVEABILITY - Diesel - Symptoms >> Symptom: *CHECKING THE FUEL PRESSURE SOLENOID CIRCUITS >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURES - CHECKING THE FUEL PRESSURE SOLENOID CIRCUITS

TEST ACTION APPLICABILITY
1 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 To 2
No --> Repair open circuit(s) as necessary.
Perform ROAD TEST VERIFICATION - VER-2 .		 All
2 Turn the ignition off.
Disconnect the Fuel Pressure Solenoid harness connector.
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 ROAD TEST VERIFICATION - VER-2 .		 All
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