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5. ASD RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE Remove the ASD Relay. Connect a jumper wire between cavity 30 and cavity 87 in the ASD Using a 12-volt test light connected to ground, check the ASD Relay Did the test light illuminate for each circuit? Yes >> Go To 6 No >> Repair the ASD Relay Output circuit(s) for an open. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 6. 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 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 not be illuminated. 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% and not illuminated with the actuation 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 7 9 - 1052 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |