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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 2.0L (LUZ) Diesel - DTC P0430 To DTC P2080) >> Diagnostic Information and Procedures >> DTC P064C: Glow Plug Control Module >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF.
  2. Disconnect the harness connector X2 at the K34 Glow Plug Control Module.
  3. Ignition ON.
  4. Verify that a test lamp illuminates between the Run/Crank Ignition 1 Voltage circuit terminal 33 and ground.
    • If the test lamp does not illuminate 

      Repair the open or high resistance in the Run/Crank Ignition 1 Voltage circuit.

    • If the test lamp illuminates 
  5. Verify that a test lamp illuminates between the Run/Crank Ignition 1 Voltage circuit terminal 33 and the Signal Ground circuit terminal 10.
    • If the test lamp does not illuminate 

      Repair the open or high resistance in the Signal Ground circuit.

    • If the test lamp illuminates 
  6. Replace the K34 Glow Plug Control Module.
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