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7. FUEL QUANTITY SOLENOID Connect the Engine Control Module (ECM) connector. Turn the ignition on. With the scan tool, actuate the Fuel Quantity Solenoid (CP3 Metering Pump) to 100%. Using a 12 volt test light connected to 12 volts, check the (K365) Fuel Quantity Solenoid Control circuit in the Fuel NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connec- NOTE: The circuit will remain actuated by the controller for 30 seconds. Be certain the actuation is active Is the test light illuminated and bright with the actuation at 100%? Yes >> Replace the Fuel Quantity Solenoid in accordance with the Service Information. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Go to 8 8. ENGINE CONTROL MODULE (ECM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Quantity Sole- Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes >> Repair as necessary. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Replace the Engine Control Module (ECM) in accordance with the Service Information. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 9 - 1048 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |