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3. (K35) EGR SOLENOID CONTROL CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (K35) EGR Solenoid Control circuit Is the resistance below 10.0 ohms? Yes >> Go to 4 No >> Repair the (K35) EGR Solenoid Control circuit for an open circuit or high resistance. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 4. (K344) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE Connect the Engine Control Module (ECM) connector. Turn the ignition on. Using a 12 volt test light connected to ground, check the (K344) Fused NOTE: The test light should be illuminated and bright. Compare Is the test light illuminated and bright for each circuit? Yes >> Go to 5 No >> Repair the (K344) Fused Main Relay Output circuit(s) for an open circuit or high resistance. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 5. EGR VALVE Connect the Engine Control Module (ECM) harness connector. Turn the ignition on. With the scan tool, actuate the Exhaust Gas Recirc Positioner to 100%. Using a 12 volt test light connected to 12 volts, check the (K35) EGR Solenoid Control circuit in the Valve Block NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connec- PM ENGINE ELECTRICAL DIAGNOSTICS - DIESEL 9 - 1115 |