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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 354 (Engine Controls And Fuel - 3.6L (LGX) - DTC P0010 To DTC P0459) >> Diagnostic Information and Procedures >> DTC P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095: Camshaft Position Actuator Solenoid Valve Control >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition Off and all vehicle systems Off, disconnect the appropriate harness connector at the Q6 Camshaft Position Actuator Solenoid Valve. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 Ω between the test points: Low Reference circuit terminal 2/BGround
    • If 10 Ω or greater 
    1. Ignition Off, disconnect the harness connector at the K20 Engine Control Module.
    2. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit
      • If less than 2 Ω, replace the K20 Engine Control Module
    • If less than 10 Ω 
  3. Ignition On.
    4. NOTE:

    A test lamp must be used for this test. The control circuit is pulled-up to a low current voltage, 1.5-3.5 V on the control circuit is normal.

  4. Verify that a test lamp does not illuminate between the control circuit terminal 1/A and ground.
    • If the test lamp illuminates 
    1. Ignition Off, disconnect the harness connector at the K20 Engine Control Module, ignition On.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit
      • If less than 1 V, replace the K20 Engine Control Module
    • If the test lamp does not illuminate 
  5. Remove the test lamp and reconnect the harness connector.
  6. Verify the scan tool Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status parameter does not display Malfunction when commanding the Q6 Camshaft Position Actuator Solenoid Valve On with a scan tool.
    • If Malfunction is displayed 
    1. Ignition Off, disconnect the harness connector at the K20 Engine Control Module.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K20 Engine Control Module.
    • If Malfunction is not displayed 
  7. Install a 3 A fused jumper wire between the control circuit terminal 1/A and the low reference circuit 2/B.
  8. Verify the scan tool Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status parameter is Malfunction when commanding the Q6 Camshaft Position Actuator Solenoid Valve On with a scan tool.
    • If Malfunction is not displayed 
    1. Ignition Off, remove the jumper wire, disconnect the harness connector at the K20 Engine Control Module.
    2. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K20 Engine Control Module
    • If Malfunction is displayed 
  9. Test or replace the Q6 Camshaft Position Actuator Solenoid Valve.
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