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5. (K370) FUEL PRESSURE SOLENOID CONTROL CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (K370) Fuel Pressure Solenoid Control Is the resistance below 10.0 ohms? Yes >> Go to 6 No >> Repair the (K370) Fuel Pressure Solenoid Control circuit for an open circuit or high resistance. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 6. FUEL PRESSURE SOLENOID Connect the Engine Control Module (ECM) connector. Remove the jumper wire and install the ASD Relay. Turn the ignition on. With the scan tool, actuate the Fuel Pressure Solenoid to 100%. Using a 12 volt test light connected to 12 volts, check the (K370) Fuel NOTE: The test light should be illuminated and bright. Compare NOTE: The circuit will remain actuated by the controller for 30 sec- Using a 12 volt test light connected to 12 volts, check the (K370) Fuel NOTE: The test light should not be illuminated. NOTE: The circuit will remain actuated by the controller for 30 sec- Is the test light illuminated and bright with the actuation at 100% and not illuminated with the actuation Yes >> Replace the Fuel Pressure 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 - 726 ENGINE DIESEL DIAG KJ |