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P0344-CAMSHAFT POSITION SENSOR INTERMITTENT (CONTINUED) 6. CHECKING CRANKSHAFT POSITION SENSOR SIGNAL WITH A LAB SCOPE NOTE: An intermittent condition in the Crank Position Sensor can cause the P0344 to set. With a lab scope probe and the Miller special tool #6801, backprobe the (K24) CKP Signal circuit in the CKP har- WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands Wiggle the related wire harness and lightly tap on the Crank Position Sensor. Observe the lab scope screen. Start the engine. Observe the lab scope screen. Are there any irregular or missing signals? Yes >> Replace the Crank Position Sensor. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 7 7. CAMSHAFT POSITION SENSOR If there are no possible causes remaining, view repair. Repair Replace the Camshaft Position Sensor. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 8. (K44) CMP SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE Turn the ignition off. Disconnect the CMP Sensor connector. Disconnect the C1 and C2 PCM harness connectors. Ignition on, engine not running. Measure the voltage on the (K44) CMP Signal circuit. Wiggle the related wire harness while taking this measurement. Does the voltage ever increase above 0 volts? Yes >> Repair the short to battery voltage in the (K44) CMP Sig- nal circuit. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 No >> Go To 9 9 - 390 ENGINE ELECTRICAL DIAGNOSTICS ND |