Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
  NOTE:
  The PCM tests the Throttle Body Assembly by opening and closing the Throttle Body plate before starting the engine.
2. With the scan tool, read DTCs and record the related Freeze Frame data.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Test Complete.
    NOTE:
    This DTC sets in extreme cold Ambient Temperatures with the throttle plate stuck by the time the vehicle gets to the dealership the condition may be corrected.
INSPECT THE THROTTLE BODY ASSEMBLY
1. Turn the ignition off.
2. Remove the Air Cleaner Assembly from the Throttle Body.
3. Check for any signs of a foreign material (ice or dirt) on the Throttle Plate or in the bore causing the Throttle Plate to stick.
4. Inspect for any signs of coking or a foreign material (ice or dirt) on the Throttle Plate or in the bore causing the Throttle Plate to stick. Turn the ignition on and use the scan tool to actuate the Throttle Plate and check for any sticking.
  Were any signs of foreign material or scoring of the Throttle Plate or bore found?
  
  Yes
  - Clean the throttle blade and bore if possible. Replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function. Refer to THROTTLE BODY, REMOVAL AND INSTALLATION .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK THE THROTTLE BODY CONNECTOR AND TERMINALS
1. Turn the ignition off.
2. Disconnect the Throttle Body harness connector.
3. Check the connector for any corroded, pushed out, spread or damaged terminals.
  Were any problems found?
  
  Yes
  - Perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors. If OK, replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function. Refer to THROTTLE BODY, REMOVAL AND INSTALLATION .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .