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Circuit/System Testing

IMPORTANT: You must complete the Circuit/System Verification before proceeding with Circuit/System Testing.
  1. Test for less than 1 ohm between the low reference circuit terminal 2 at the harness connector and ground.
    • If greater than 1 ohm, test the low reference for an open/high resistance. If the circuit tests normal replace the CMP Actuator solenoid.
  2. Test for less than 1 ohm on the high control circuit terminal 1 at the harness connector and ECM X2-16.
    • If greater than 1 ohm, test the high control circuit for an open/high resistance. If the circuit tests normal, perform the Component Testing for CMP actuator solenoid.
  3. Inspect the CMP actuator. Refer to Camshaft Position Actuator Cleaning and Inspection and Camshaft Position Actuator Magnet Cleaning and Inspection .
  4. Inspect the engine timing components-Refer to Camshaft Timing Chain and Sprocket Cleaning and Inspection .
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