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5. FUEL PRESSURE SOLENOID CIRCUIT(S) SHORTED TOGETHER Turn the ignition off. Disconnect the ECM harness connectors. Disconnect the Fuel Pressure Solenoid harness connector. Measure the resistance between the Fuel Pressure Solenoid circuits. Is the resistance above 1000 ohms? Yes >> Go To 6 No >> Repair the Fuel Pressure Solenoid circuits for a short together. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 6. FUEL PRESSURE SOLENOID CIRCUIT(S) SHORTED TO VOLTAGE Turn the ignition off. Disconnect the ECM harness connectors. Disconnect the Fuel Pressure Solenoid harness connector. Remove the ASD Relay. Connect a jumper wire between cavity 30 and cavity 87 of the ASD Turn the ignition on. Measure the voltage each of the Fuel Pressure Solenoid circuits. Is the voltage below 1.0 volt for each measurement? Yes >> Go To 7 No >> Repair the circuit(s) that measured above 1.0 volts for a short to voltage. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 7. FUEL PRESSURE SOLENOID Turn the ignition off. Remove the jumper wire from the ASD relay connector. Reinstall the ASD relay. Turn the ignition on. With the scan tool, erase ECM DTCs. Monitor the scan tool for ECM DTCs. NOTE: The scan tool should display P2294-FUEL PRESSURE SOLENOID OPEN CIRCUIT. Connect a jumper wire between cavity 1 and cavity 2 of the Fuel Pressure Solenoid harness connector. Turn the ignition on. With the scan tool, erase ECM DTCs. Monitor the scan tool for ECM DTCs. 9 - 1434 ENGINE DIESEL DIAG KJ |