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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 398 (Engine Controls And Fuel - 6.2L (LT4) - Diagnostic Information And Procedures (1 Of 3)) >> Diagnostic Information and Procedures >> DTC P0010, P0011, P2088, or P2089 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE:
    • It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.
    • This diagnostic procedure will reference the component code called out in the schematic, if applicable.The following are the same components, even though they are named differently:
      • Q6 Camshaft Position Actuator Solenoid Valve = Camshaft Position Actuator Magnet
      • Camshaft Position Actuator Solenoid Valve = Camshaft Oil Control Spool Valve
  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector: Q6 Camshaft Position Actuator Solenoid Valve
  3. Test for less than 10 ohms between the test points: Low Reference circuit terminal 1/A & Ground
    • If 10 ohms or greater 
    1. Disconnect the appropriate electrical connector: K20 Engine Control Module
    2. Test for less than 2 ohms between the test points: Low Reference circuit terminal 1/A@Component harness & The other end of the circuit@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K20 Engine Control Module
    • Go to next step: If less than 10 ohms 
  4. Ignition - On/Vehicle - In Service Mode
  5. Perform the scan tool control function: Camshaft Position Actuator Solenoid Valve - Off

    Verify a test lamp does not turn On between the test points: Control circuit terminal 2/B & Ground

    • If the test lamp turns On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the appropriate electrical connector: K20 Engine Control Module
    3. Ignition - On/Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal 2/B@Component harness & The other end of the circuit@Control module harness
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K20 Engine Control Module
    • Go to next step: If the test lamp does not turn On 
  6. Remove - Test Lamp
  7. Perform the scan tool control function: Camshaft Position Actuator Solenoid Valve - On

    Verify the scan tool parameter: Intake/Single Camshaft Position Actuator Control Circuit Low Test Status = Not Run or Okay

    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the appropriate electrical connector: K20 Engine Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal 2/B@Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: K20 Engine Control Module
    • Go to next step: If the specified state 
  8. Connect a 3 A fused jumper wire between the test points: Control circuit terminal 2/B & Ground
  9. Perform the scan tool control function: Camshaft Position Actuator Solenoid Valve - On

    Verify the scan tool parameter: Intake/Single Camshaft Position Actuator Control Circuit Low Test Status = Malfunction

    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the appropriate electrical connector: K20 Engine Control Module
    3. Test for less than 2 ohms between the test points: Control circuit terminal 2/B@Component harness & The other end of the circuit@Control module harness
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Replace the component: K20 Engine Control Module
    • Go to next step: If the specified state 
  10. Verify DTC P0011 is not set.
    • If the DTC is set 
    1. Ignition/Vehicle - Off
    2. Verify a condition does not exist with the component: Q6 Camshaft Position Actuator Solenoid Valve - Refer to: Cleaning and Inspection Procedure @ Camshaft Position Actuator Magnet Replacement
      • If a condition exists - Repair or replace as necessary
      • Go to next step: If no condition exists
    3. Verify a condition does not exist with the component: Camshaft Position Actuator Solenoid Valve - Refer to: Cleaning and Inspection Procedure @ Camshaft Position Actuator Solenoid Valve Replacement
      • If a condition exists - Repair or replace as necessary
      • Go to next step: If no condition exists
    4. Verify a condition does not exist with the component: Camshaft Position Actuator - Refer to: Cleaning and Inspection Procedure @ Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Replacement
      • If a condition exists - Repair or replace as necessary
      • Go to next step: If no condition exists
    5. Replace the component: Camshaft Position Actuator & Camshaft Oil Control Spool Valve
    • Go to next step: If the DTC is not set 
  11. Test or replace the component: Q6 Camshaft Position Actuator Solenoid Valve
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