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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P040B - P204D)) >> Diagnostic Information And Procedures >> DTC P2008, P2009, Or 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/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector: M98 Intake Manifold Runner Valve Actuator
  3. Ignition - On/Vehicle - In Service Mode
  4. Verify a test lamp turns On between the test points: Ignition circuit terminal 6 & Ground
    • If the test lamp does not turn On and the circuit fuse is OK 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Test for less than 2 Ω between the test points: Ignition circuit terminal 6 & Output terminal @ F3UA Fuse
      • If 2 Ω or greater - Repair the open/high resistance in the circuit.
      • If less than 2 Ω - Verify the fuse is OK and there is voltage at the fuse.
    • If the test lamp does not turn On and the circuit fuse is open 
    1. Connect the electrical connector: M98 Intake Manifold Runner Valve Actuator
    2. Replace the component: F3UA Fuse
    3. Verify the fuse does not open.
      • If the fuse opens and there are components connected to the circuit - Disconnect a component listed below and repeat step 4.2
      • E45 Positive Crankcase Ventilation Heater
      • M98 Intake Manifold Runner Valve Actuator
      • If the fuse opens with all components disconnected from the circuit - Repair the short to ground on the circuit.
      • If the fuse does not open after disconnecting a component from the circuit - Replace the component disconnected last.
      • If the fuse does not open with all components connected.
    4. Ignition - On/Vehicle - In Service Mode
      5. NOTE:

      It may be necessary to use a scan tool control function to operate a component.

    5. Operate the component: Each component on the circuit - One at a time

      Verify the fuse does not open when any of the components are activated.

      • If the fuse opens - Replace the component that caused the fuse to open when activated.
      • If the fuse does not open
    6. All OK.
    • Go to next step: If the test lamp turns On 
  5. Verify a test lamp does not turn On between the test points: Control circuit terminal 1 & B+
    • If the test lamp turns On 
    1. Ignition/Vehicle - Off & Remove - Test lamp
    2. Disconnect the electrical connector: X2 @ K20 Engine Control Module
    3. Test for infinite resistance between the test points: Control circuit terminal 1 @ Component harness & Ground
      • If less than infinite resistance - Repair the short to ground on the circuit.
      • If infinite resistance - Replace the component: K20 Engine Control Module
    • Go to next step: If the test lamp does not turn On 
  6. Remove - Test Lamp
  7. Verify the scan tool parameter: Intake Manifold Runner Control Valve Control Circuit High Voltage Test Status = OK
    • If not the specified state 
    1. Ignition/Vehicle - Off
    2. Disconnect the electrical connector: X2 @ K20 Engine Control Module
    3. Ignition - On/Vehicle - In Service Mode
    4. Test for less than 1 V between the test points: Control circuit terminal 1 @ Component harness & Ground
      • If 1 V or greater - Repair the short to voltage on the circuit.
      • If less than 1 V - Replace the component: K20 Engine Control Module
    • Go to next step: If the specified state 
  8. Connect a 3 A fused jumper wire between the test points: Control circuit terminal 1 & Ignition circuit terminal 6
  9. Perform the scan tool control function: Intake Manifold Runner Control Valve - Increase

    Verify the scan tool parameter: Intake Manifold Runner Control Valve Control Circuit High Voltage Test Status = Malfunction

    • If not the specified state 
    1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
    2. Disconnect the electrical connector: X2 @ K20 Engine Control Module
    3. Test for less than 2 Ω between the test points: Control circuit terminal 1 @ Component harness & Terminal 54 @ Control module harness
      • If 2 Ω or greater - Repair the open/high resistance in the circuit.
      • If less than 2 Ω - Replace the component: K20 Engine Control Module
    • Go to next step: If the specified state 
  10. Test or replace the component: M98 Intake Manifold Runner Valve Actuator
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