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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 P2008-P2010: Intake Manifold Runner Control Valve Control Circuit >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition Off, disconnect the harness connector at the M98 Intake Manifold Runner Valve Actuator, ignition On.
    NOTE: It may be necessary to remove the positive crankcase ventilation oil separator assembly to access the M98 Intake Manifold Runner Valve Actuator harness connector. Refer to Repair Instructions .
  2. 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, remove the test lamp.
    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.
    • 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 ignition circuit and ground.
      NOTE: An internal short in any component supplied by the fuse may cause the fuse to open and set a DTC when the component is activated.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, test all components connected to the ignition voltage circuit for a short and replace as necessary.
    • If the test lamp Illuminates 
  3. Connect a test lamp between the control circuit terminal 2 and the ignition circuit terminal 3.
  4. Verify the test lamp turns On and varies in intensity when commanding the Intake Manifold Runner Control Valve between 5-95% with a scan tool.
    • If the test lamp is always Off 
    1. Ignition Off, remove the test lamp, disconnect the harness connector at the K20 Engine 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 K20 Engine Control Module.
    • If the test lamp is always On and does not vary in intensity 
    1. Ignition Off, remove the test lamp, disconnect the harness connector at the K20 Engine 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 K20 Engine Control Module.
    • If the test lamp turns On and varies in intensity 
  5. Replace the M98 Intake Manifold Runner Valve Actuator.
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