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Home >> Buick >> 2019 >> Regal TourX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 139 (Engine Controls And Fuel - 3.6L (LGX) - Diagnostic Information And Procedures (P0449-P3436) And Symptoms) >> Diagnostic Information and Procedures >> DTC P25CA-P25CF >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Static Test

  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector: Q84 Camshaft Position Actuator Park Lock Solenoid Valve
  3. Test for 11 to 30 ohms between the test points: Control terminal 2/B & Ignition terminal 1/A
    • If not between 11 and 30 ohms 

      Replace the component: Q84 Camshaft Position Actuator Park Lock Solenoid Valve

    • Go to next step: If between 11 and 30 ohms 
  4. Test for infinite resistance between the test points: Each terminal of the component & The component's housing
    • If less than infinite resistance 

      Replace the component: Q84 Camshaft Position Actuator Park Lock Solenoid Valve

    • Go to next step: If infinite resistance 
  5. All OK.

Dynamic Test

  1. Ignition/Vehicle - Off
  2. Disconnect the appropriate electrical connector: Q84 Camshaft Position Actuator Park Lock Solenoid Valve
  3. Connect a 3 A fused jumper wire between the test points: Ignition terminal 1/A & 12 V
  4. CAUTION:

    Complete the testing as quickly as possible in order to prevent overheating and damaging the component.

  5. Momentarily connect a jumper wire between the test points: Control terminal 2/B & Ground

    Verify the component turns On and Off when connecting and disconnecting the jumper wire: Q84 Camshaft Position Actuator Park Lock Solenoid Valve

    • If the component does not turn On and Off 

      Replace the component: Q84 Camshaft Position Actuator Park Lock Solenoid Valve

    • Go to next step: If the component turns On and Off 
  6. All OK.