Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

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.
THROTTLE BODY ASSEMBLY INSPECTION
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 or replace the Throttle Body Assembly in accordance with the Service Information if necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
THROTTLE BODY
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
  - Replace the Throttle Body Assembly in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .