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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 P25AC Or P25AD: Piston Cooling Oil Jet Stuck Off/On >> Dynamic Test

Dynamic Test

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  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector: B267 Piston Cooling Oil Pressure Switch
  3. Connect a DMM between the test points: Signal circuit terminal 1 @ Component & Ground
  4. Engine Running
  5. Verify the DMM transitions to infinite resistance when above 2650 RPMs.
    • If not in the specified range or does not change 

      Replace the component: B267 Piston Cooling Oil Pressure Switch

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