Circuit/System Verification

• If any of the DTCs are set 

  Replace the component: M106C Exhaust Control Valve Actuator - Cylinder Deactivation-Left Side

• Go to next step: If none of the DTCs are set 

• If any of the DTCs are set 

1. Perform the following learn procedure: Cylinder Deactivation Exhaust Control Valve Learn  @ K20 Engine Control Module
2. Ignition/Vehicle & All vehicle systems - Off - For 2 min
3. Ignition - On / Vehicle - In Service Mode
4. Operate the vehicle within the Conditions for Running the DTC.

   Verify the DTC does not set.

   • If the DTC sets - Refer to: Circuit/System Testing - Test 2
   • Go to next step: If the DTC does not set
5. All OK.

• Go to next step: If none of the DTCs are set 

• If any of the DTCs are set 

  Refer to: Circuit/System Testing - Test 2

• Go to next step: If none of the DTCs are set 

Verify a click can be heard or felt at the following component(s) when the scan tool control function was commanded: M106C Exhaust Control Valve Actuator - Cylinder Deactivation-Left Side

• If a click cannot be heard or felt 

  Refer to: Circuit/System Testing - Test 1

• Go to next step: If a click can be heard or felt 

Verify a condition does not exist with the component: M106C Exhaust Control Valve Actuator - Cylinder Deactivation-Left Side - Turns Off

• Perform the action while monitoring the component:

• Wiggle the harness and connector: M106C Exhaust Control Valve Actuator - Cylinder Deactivation-Left Side
• Wiggle the harness and connector: K111 Fuel Pump Power Control Module

• If a condition exists 

  Repair as necessary - Wiring / Terminal(s) / Electrical Connector(s)

• Go to next step: If no condition exists 

Verify the DTC does not set.

• If the DTC sets 

  Repeat the procedure starting at step 2

• Go to next step: If the DTC is not set