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3. CAMSHAFT 1/1 POSITION SENSOR CIRCUIT WIRING OR CONNECTORS Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Camshaft 1/1 Posi- Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Inspect the Camshaft 1/1 Position Sensor for conditions such as loose mounting screws, damage, or cracks. Were any problems found? Yes >> Repair as necessary. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). No >> Go to 4 4. CRANKSHAFT POSITION SENSOR IRREGULAR SIGNAL Using a lab scope and the Miller special tool #6801, backprobe the Ignition on, engine not running. Wiggle the related wire harness and lightly tap on the Crankshaft Posi- Start the engine. Monitor the Crankshaft Position Sensor signal on the lab scope screen. Were any Crankshaft Position Sensor signals irregular or miss- Yes >> Go to 6 No >> Go to 5 5. CAMSHAFT 1/1 POSITION SENSOR IRREGULAR SIGNAL Turn the ignition off. Using a lab scope and the Miller special tool #6801, backprobe the Ignition on, engine not running. Wiggle the related wire harness and lightly tap on the Camshaft 1/1 Start the engine. Monitor the Camshaft 1/1 Position Sensor signal on the lab scope Were any Camshaft 1/1 Position Sensor signals irregular or Yes >> Go to 7 No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 31 |