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3. EXHAUST DIFFERENTIAL SENSOR CIRCUIT HIGH RESISTANCE Turn the ignition off. Disconnect the Exhaust Differential Pressure Sensor harness connector. Disconnect the ECM harness connectors. Measure the resistance of each Exhaust Differential Pressure Sensor Is the resistance below 10.0 ohms for each circuit? Yes >> Go To 4 No >> Repair the circuit(s) that measured above 10.0 ohms for high resistance. (Refer to 9 - ENGINE - DIAGNOSIS AND 4. EXHAUST DIFFERENTIAL PRESSURE SENSOR Turn the ignition off. Replace the Exhaust Differential Pressure Sensor. Turn the ignition on. With the scan tool, Clear DTCs in the Engine Control Module (ECM). Test drive the vehicle With the scan tool, Read DTCs in the Engine Control Module (ECM). Is the status Active for this DTC? Yes >> Replace the Diesel Particulate Filter. No >> Test Complete. 9 - 1628 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |