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DTC P0342: CAMSHAFT POSITION SENSOR SUPPLY VOLTAGE TOO LOW

Monitor & Set Conditions

Camshaft Position Sensor (CMP) sensor supply voltage is monitored when ignition is on. DTC may be stored when CMP sensor 5-volt supply voltage is less than 4.2 volts for 2 seconds.

Possible Causes

  • 5-volt Supply Circuit Short To Ground
  • Wiring Or Connectors
  • Camshaft Position Sensor

Testing

1. Turn ignition off. Disconnect Camshaft Position (CMP) sensor harness connector. CMP sensor is located on left side of engine, below fuel injection pump. Turn ignition on. Using DVOM connected to ground, measure voltage at terminal "A" (Violet/White wire) at CMP sensor harness connector. If voltage is less than 4.2 volts, go to next step. If voltage is 4.2 volts or greater, test is complete.

2. Turn ignition off. Ensure CMP sensor harness connector is still disconnected. Disconnect ECM harness connector. ECM is located on driver's side of engine, just in front of fuel transfer pump and contains a 50-pin connector. Check for poor connection/terminal contact at ECM harness connector. Repair as necessary. Using DVOM, measure resistance between ground and terminal "A" (Violet/White wire) on CMP sensor harness connector. If resistance is 1000 ohms or greater, go to next step. If resistance is less than 1000 ohms, repair short to ground in Violet/White wire between CMP sensor and ECM.

3. Check wiring and connectors for damage, corrosion or other problems. Repair as necessary. If wiring and connectors are okay, test is complete.