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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Bumpers And Fascias >> Diagnostic Information and Procedures >> DTC P059F or P151E: Active Grille Air Shutter >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF and all vehicles systems OFF, disconnect the harness connector at the M60A Active Grille Air Shutter 1 Motor Module. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 Ω between the ground circuit terminal 2 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  3. Ignition ON.
  4. Verify a test lamp illuminates between the ignition circuit terminal 3 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ignition circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse. Refer to Power Mode Mismatch .
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF.
    2. Test for infinite resistance between the ignition circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the M60A Active Grille Air Shutter 1 Motor Module.
    • If the test lamp illuminates 
  5. Connect a test lamp between the control circuit terminal 1 and the ignition circuit terminal 3.
  6. Verify the test lamp turns On and Off when performing the Active Grille Air Shutter System test with a scan tool.
    • If the test lamp is always Off 
    1. Ignition OFF, disconnect the harness connector at the K38 Chassis Control Module, ignition ON.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    3. Ignition OFF.
    4. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K38 Chassis Control Module.
    • If the test lamp is always On 
    1. Ignition OFF, disconnect the harness connector at the K38 Chassis Control Module.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K38 Chassis Control Module.
    • If the test lamp turns On and Off 
  7. Ignition OFF, connector the harness connector at the M60A Active Grille Air Shutter 1 Motor Module. Disconnect the harness connector at the K38 Chassis Control Module, Ignition ON.
  8. Test for greater than 11 V between the control circuit terminal 12 and ground.
    • If 11 V or less 
    1. Ignition OFF, disconnect the harness connector at the M60A Active Grille Air Shutter 1 Motor Module.
    2. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the M60A Active Grille Air Shutter 1 Motor Module.
    • If greater than 11 V 
  9. Test or replace the M60A Active Grille Air Shutter 1 Motor Module.
  10. Verify DTC P151E is not set.
    • If the DTC is set 

      Replace the K38 Chassis Control Module.

    • If the DTC is not set 
  11. All OK
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