Circuit/System Testing

P0010

1. Ignition OFF, disconnect the CMP actuator solenoid harness connector at the CMP actuator solenoid.
2. Test for less than 1 ohm of resistance between the low reference circuit and ground.
   • If greater than 1 ohm, test the low reference for an open/high resistance. If the circuit tests normal replace the ECM.
3. Connect a test lamp between the high control circuit and the low reference circuit.
4. Command the CMP actuator solenoid ON and OFF. The test lamp should turn ON and OFF when changing between commanded states.
   • If the test lamp is always ON, test the high control circuit for a short to voltage. If the circuit tests normal replace the ECM.
   • If test lamp is always OFF, test the control circuit for a short to ground, an open/high resistance. If the circuit tests normal replace the ECM.
5. If all circuits test normal, test or replace the CMP Actuator solenoid.

P0011

1. Test for less than 1 ohm of resistance between the low reference circuit 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 of resistance on the high control circuit.
   • 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 Timing Chain and Sprockets Cleaning and Inspection .