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5. (K156) FUEL TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN CIRCUIT OR HIGH RESISTANCE Measure the resistance of the (K156) Fuel Temperature Sensor Signal Is the resistance below 10.0 ohms? Yes >> Go to 6 No >> Repair the (K156) Fuel Temperature Sensor Signal circuit for an open circuit or high resistance. Perform the ECM Verification Test Ver. 1. (Refer to 9 - 6. ENGINE CONTROL MODULE (ECM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Temperature 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 - 1196 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |