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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P1684 To P2115 >> DTC Troubleshooting >> P2112-Electronic Throttle Control - Unable To Open >> Diagnostic Test

Diagnostic Test

  1. 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 on the repair order.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

  2. 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
  3. CHECK THE THROTTLE BODY CONNECTOR 
    1. Disconnect the Throttle Body harness connector.
    2. Check the connector for any corroded, pushed out, spread or damaged terminals.

      Were any problems found?

      Yes 

      No