LEMON Manuals: Even more car manuals for everyone
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 P163C: Glow Plug Control Module Primary Circuit >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, disconnect the X1 harness connector at the K34 Glow Plug Control Module.
  2. Ignition ON.
  3. Verify a test lamp illuminates between the Battery Positive Voltage circuit terminal 1 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF, remove the test lamp.
    2. Test for less than 2Ω in the battery positive voltage circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, verify the fuse is not open and there is voltage at the fuse.
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF, remove the test lamp.
    2. Test for infinite resistance between the battery positive voltage circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K34 Glow Plug Control Module.
    • If the test lamp illuminates 
  4. Ignition OFF, Reconnect the X1 harness connector at the K34 Glow Plug Control Module.
  5. Disconnect the X2 harness connector at the K34 Glow Plug Control Module.
  6. Ignition ON.
  7. Verify a test lamp illuminates between the run/crank ignition 1 voltage circuit terminal 33 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF, remove the test lamp.
    2. Test for less than 2Ω in the run/crank ignition 1 circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, verify the fuse is OK and there is voltage at the fuse.
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF, remove the test lamp.
    2. Test for infinite resistance between the run/crank ignition 1 circuit and ground.
      • If less than infinite resistance, repair the short to ground in the circuit.
      • If infinite resistance, replace the K34 Glow Plug Control Module.
    • If the test lamp illuminates 
  8. Ignition OFF and all vehicle systems OFF. It may take up to 2 min for all vehicle systems to power down.
  9. Test for less than 10 Ω between the signal ground circuit terminal 10 and ground.
    • If 10 Ω or greater 
    1. Test for less than 2Ω in the ground circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  10. Test for less than 10 Ω between the ground circuit terminal 8 and ground.
    • If 10 Ω or greater 
    1. Test for less than 2Ω in the ground circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  11. Replace the K34 Glow Plug Control Module.
scientia non olet · About LEMON Manuals