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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 1.6L (LH7) Diesel) >> Diagnostic Information And Procedures >> DTC P25A9, P25AA, Or P25AB: Piston Cooling Oil Jet Solenoid Valve Control Circuit >> Circuit/System Verification

Circuit/System Verification

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

The engine oil level and condition is critical to the correct operation of the system.

  1. Ignition - On/Vehicle - In Service Mode
  2. Perform the scan tool control function: Piston Cooling Oil Jet Solenoid Valve - On and Off

    Verify the scan tool parameter:

    • Piston Cooling Oil Jet Solenoid Valve Control Circuit High Voltage Test Status = OK or Not Run
    • Piston Cooling Oil Jet Solenoid Valve Control Circuit Low Voltage Test Status = OK or Not Run
    • Piston Cooling Oil Jet Solenoid Valve Control Circuit Open Test Status = OK or Not Run
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  3. Perform the scan tool control function: Piston Cooling Oil Jet Solenoid Valve - On and Off

    Verify the scan tool parameter:

    • Piston Cooling Oil Jet Solenoid Valve Control Circuit High Voltage Test Status = OK or Not Run
    • Piston Cooling Oil Jet Solenoid Valve Control Circuit Low Voltage Test Status = OK or Not Run
    • Piston Cooling Oil Jet Solenoid Valve Control Circuit Open Test Status = OK or Not Run
    • Perform the action while monitoring the parameter:
    • Wiggle the harness and connector: Q45 Piston Cooling Oil Jet Solenoid Valve
    • Wiggle the harness and connector: K20 Engine Control Module
    • If not the specified state 

      Repair as necessary - Wiring/Terminal(s)/Electrical Connector(s)

    • Go to next step: If the specified state 
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC is not set 
  5. All OK.