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3. (K356) BOOST PRESSURE SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Boost Pressure Sensor harness connector. Turn the ignition on. Measure the voltage on the (K356) Boost Pressure Sensor 5 Volt Sup- Is the voltage below 1.0 volt? Yes >> Go To 4 No >> Repair the (K356) Boost Pressure Sensor 5 Volt Supply cir- cuit for a short to voltage. Perform the ECM VERIFICATION TEST. (Refer to 9 - 4. (K853) CRANKSHAFT POSITION SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Crankshaft Position Sensor harness connector. Turn the ignition on. Measure the voltage of the (K853) Crankshaft Position Sensor 5 Volt Is the voltage below 1.0 volt? Yes >> Go To 5 No >> Repair the (K853) Crankshaft Position Sensor 5 Volt Supply circuit for a short to voltage. Perform the ECM VERIFICATION TEST. (Refer to 9 - 5. ENGINE CONTROL MODULE (ECM) Turn the ignition off. Inspect the (K853) Crankshaft Position Sensor 5 Volt Supply circuit between the Crankshaft Position Sensor and the Inspect the (K350) Fuel Pressure Sensor 5 Volt Supply circuit between the Fuel Pressure Sensor and the ECM. Inspect the (K356) Boost Pressure Sensor 5 Volt Supply circuit between the Boost Pressure Sensor and the ECM. Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes >> Repair as necessary. Perform the ECM VERIFICATION TEST. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Replace and program the Engine Control Module in accordance with the Service Information. Perform the ECM VERIFICATION TEST. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 9 - 1552 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |