LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 2023 >> Durango GT, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (6.2L - DTCS P1620 To P2107) >> DTC Troubleshooting >> P2101-Electronic Throttle Control Motor Performance - Bank 1 >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, read DTCs and record on the repair order.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
        NOTE:

        If the P2100 is intermittent, it is possible that Low battery voltage is causing excessive current draw, in very hot or very cold ambient temperatures and this is considered a normal protection operation. No repair is necessary.

  2. CHECK THE THROTTLE BODY (K447) MOTOR (+) CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the Throttle Body harness connector.
    3. Disconnect the PCM C2 harness connector.
    4. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
    5. Measure the resistance of the Throttle Body (K447) Motor (+) circuit between the Throttle Body harness connector and the GPEC Diagnostic Adaptor.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  3

      No 

      • Repair the Throttle Body (K447) Motor (+) circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  3. CHECK THE THROTTLE BODY (K448) MOTOR (-) CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the Throttle Body (K448) Motor (-) circuit from the Throttle Body harness connector to the GPEC Diagnostic Adaptor.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the Throttle Body (K448) Motor (-) circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  4. CHECK FOR THE ETC MOTOR CIRCUITS SHORTED TO 12.0 VOLTS 
    1. Reconnect the Throttle Body harness connector.
    2. Reconnect the PCM C2 harness connector with the GPEC Diagnostic Adaptor still connected in line.
    3. Turn the ignition on.
    4. With the scan tool, actuate the Throttle Follower Test.
    5. Slowly press and release the Accelerator Pedal while monitoring the voltage.
    6. Measure the voltage on the Throttle Body (K447) Motor (+) circuit at the GPEC Diagnostic Adaptor.
    7. Measure the voltage on the Throttle Body (K448) Motor (-) circuit at the GPEC Diagnostic Adaptor.
      NOTE:

      The voltage reading should change as the valve position is changed. A reading that stays at 12.0 volts would indicate a short to voltage.

      Is the voltage reading steady at 12.0 volts for either circuit?

      Yes 

      • Repair the Throttle Body (K447) Motor (+) circuit or Throttle Body (K448) Motor (-) circuit for a short to voltage.
        NOTE:

        A short to voltage on the motor circuits can damage the internal H-Bridge driver of the PCM and cause it to be open. After repairing the short to voltage, verify that the PCM was not damaged.

        Go To  5

      No 

      • Go To  5
  5. CHECK THE THROTTLE BODY MOTOR FOR PROPER OPERATION 
    1. Reconnect the Throttle Body harness connector.
      CAUTION:

      Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.

    2. Connect the (special tool #10436, Adapter, GPEC Diagnostic) in-line with the PCM C2 harness connector.
    3. Connect the voltmeter positive lead to the Throttle Body (K447) Motor (+) circuit.
    4. Connect the voltmeter negative lead to the Throttle Body (K448) Motor (-) circuit.
    5. Turn the ignition on.
    6. With the scan tool, actuate the Throttle Follower Test.
    7. Slowly press and release the Accelerator Pedal while monitoring the voltage.

      Is the voltage changing as the Throttle Body Valve position changes?

      Yes 

      • If a short to voltage has been repaired on either of the ETC Motor circuits in the previous step, repair is complete. If not, replace the Throttle Body Assembly in accordance with the Service Information. Refer to THROTTLE BODY, REMOVAL . After installation is complete, with a scan tool perform the ETC RELEARN function.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  6
  6. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all PCM harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Check for spread terminals and verify proper terminal tension.

      Repair any conditions that are found.

    5. Connect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
    10. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      No 

      • The wiring or poor connection problem has been repaired.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
scientia non olet · About LEMON Manuals