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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (P0351 - P26C8) And Symptoms) >> Diagnostic Information And Procedures >> DTC P25CA, P25CB, Or P25CC: Intake Camshaft Position Actuator Park Lock Solenoid Valve Control Circuit >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.

Static Test

  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector:Q84 Camshaft Position Actuator Park Lock Solenoid Valve
  3. Test for 11 to 30 ohms between the test points:Control terminal 2 & Ignition terminal 1
    • 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 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 & 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 & 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.