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Home >> Chevrolet >> 2008 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls And Fuel - 3.9L - DTC P0010 To DTC P0336) >> DTC P0010 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: You must complete the Circuit/System Verification before proceeding with Circuit/System Testing.
  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.
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