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P0340-CAMSHAFT POSITION SENSOR CIRCUIT (CONTINUED) 13. PCM NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal Were there any problems found? Yes >> Repair as necessary. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Replace and program the Powertrain Control Module per Service Information. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 14. ERRATIC CMP SIGNAL With a lab scope probe and the Miller special tool #6801, back probe the (K44) CMP Signal circuit in the CMP 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 the Camshaft Position Sensor. Observe the lab scope screen. Allow the engine to idle. Observe the lab scope screen. Did the CMP Sensor generate any erratic pulses? Yes >> Replace the Camshaft Position Sensor. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 15 15. ERRATIC CKP SIGNAL Turn the ignition off. 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 Crankshaft Position Sensor. Observe the lab scope screen. Allow the engine to idle. Observe the lab scope screen. Did the CKP Sensor generate any erratic pulses? Yes >> Replace the Crankshaft Position Sensor. Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Test Complete, the conditions that set this DTC are not present at this time. 9 - 386 ENGINE ELECTRICAL DIAGNOSTICS ND |