Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read and record DTCs.
3. With the scan tool, erase DTCs.
4. Navigate to PCM System Tests and perform the Active Grill Shutter test.
5. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending at this time?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE ACTIVE GRILL SHUTTER OPERATION
1. Turn the ignition off.
2. Visually inspect the Active Grill Shutter Assembly for the items listed but, not limited to the following:
  - Dirt, ice or obstructions that could cause the Active Grill Shutter Assembly to bind causing linkage or shutters to become disconnected.
  - Damaged or disconnected Active Grill Shutter Actuator linkages.
  - Damaged Active Grill Shutter Assembly frame or shutters.
  - Loose or missing Active Grill Shutter Actuator mounting bolts/retainers.
  Were any problems found?
  
  Yes
  - Repair the item causing the failure and retest for an active fault.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (A940) FUSED B+ CIRCUITS AT THE ACTIVE GRILL SHUTTER ACTUATOR
1. Disconnect the Active Grill Shutter Actuator harness connector.
2. Turn the ignition on.
3. Measure the voltage on the (A940) Fused B+ circuit at the Active Grill Shutter Actuator harness connector.
  Is the voltage equal to battery voltage?
  
  Yes
  - Go To 4
  No
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE (Z905) GROUND CIRCUIT AT THE ACTIVE GRILL SHUTTER ACTUATOR
1. Turn the ignition off.
2. Measure the resistance between ground and the (Z905) Ground circuit at the Active Grill Shutter Actuator harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Replace the Active Grill Shutter Actuator in accordance with the Service Information. Navigate to Miscellaneous functions and perform the 'Active Grille Shutter Replaced' procedure.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Repair the (Z905) Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .