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Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    1. Ignition on, engine not running.
      NOTE:

      If the P2100 is intermittent, it is possible that the controller is overheating in extreme hot temperatures, and this is considered a normal protection operation. No repair is necessary.

      NOTE:

      Low battery voltage can also cause excessive current draw, in very hot and very cold ambient temperatures. Make sure the battery can pass a load test before continuing.

    2. With a scan tool, select View DTCs.
    3. Record the Freeze Frame data and look closely at the temperatures at which this DTC set.

      Is the DTC Active at this time?

      Yes 

      • Go To  2.

      No 

  2. THROTTLE PLATE 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.

      Were any signs of foreign material or scoring of the throttle plate or bore found?

      Yes 

      • Remove the debris if possible or 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.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  3.
  3. (K447) ETC POSITIVE CIRCUIT SHORTED TO VOLTAGE 
    Fig 1: Measuring Voltage On (K447) ETC Positive Circuit At Appropriate Terminal Of Special Tool #8815
    GC0090955Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Throttle Body harness connector.
    2. Disconnect the C2 PCM harness connector.
    3. Ignition on, engine not running.
      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 PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform the diagnostics.

    4. Measure the voltage on the (K447) ETC Positive circuit at the appropriate terminal of special tool (special tool #8815A, Kit, NGC, 38 Position).

      Is there any voltage present?

      Yes 

      • Repair the short to voltage on the (K447) ETC Positive circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  4.
  4. (K448) ETC NEGATIVE CIRCUIT SHORTED TO VOLTAGE 
    Fig 2: Measuring Voltage On (K448) ETC Negative Circuit At Appropriate Terminal Of Special Tool #8815
    GC0090956Courtesy of CHRYSLER GROUP, LLC
    1. Measure the voltage on the (K448) ETC Negative circuit at the appropriate terminal of special tool (special tool #8815A, Kit, NGC, 38 Position).

      Is there any voltage present?

      Yes 

      • Repair the short to voltage in the (K448) ETC Negative circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  5.
  5. (K447) ETC POSITIVE CIRCUIT SHORTED TO THE (K448) ETC NEGATIVE CIRCUIT 
    Fig 3: Measuring Resistance Between ETC Motor Positive Circuit And Negative Circuit At Appropriate Terminals Of Special Tool #8815
    GC0090837Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance between the (K447) ETC Positive circuit and the (K448) ETC Negative circuit at the appropriate terminals of special tool (special tool #8815A, Kit, NGC, 38 Position).

      Is the resistance below 100 ohms?

      Yes 

      • Repair the short to between the (K447) ETC Positive circuit and the (K448) ETC Negative circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  6.
  6. (K447) ETC POSITIVE CIRCUIT OPEN 
    Fig 4: Measuring Resistance Of (K447) ETC Positive Circuit From Throttle Body Harness Connector To Appropriate Terminal Of Special Tool #8815
    GC0090957Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance of the (K447) ETC Positive circuit from the Throttle Body harness connector to the appropriate terminal of special tool (special tool #8815A, Kit, NGC, 38 Position).

      Is the resistance below 5.0 ohms?

      Yes 

      • Go To  7.

      No 

  7. (K447) ETC POSITIVE CIRCUIT SHORTED TO GROUND 
    Fig 5: Measuring Resistance Between Ground And ETC Motor Positive Circuit At Appropriate Terminals Of Special Tool #8815
    GC0090958Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (K447) ETC Positive circuit between the appropriate terminals of special tool (special tool #8815A, Kit, NGC, 38 Position).

      Is the resistance below 100 ohms?

      Yes 

      • Repair the short to ground in the (K447) ETC Positive circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  8.
  8. (K448) ETC NEGATIVE CIRCUIT OPEN 
    Fig 6: Measuring Resistance Of (K448) ETC Negative Circuit From Throttle Body Harness Connector To Appropriate Terminal Of Special Tool #8815
    GC0090959Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance of the (K448) ETC Negative circuit from the Throttle Body harness connector to the appropriate terminal of special tool (special tool #8815A, Kit, NGC, 38 Position).

      Is the resistance below 5.0 ohms?

      Yes 

      • Go To  9.

      No 

  9. (K448) ETC NEGATIVE CIRCUIT SHORTED TO GROUND 
    Fig 7: Measuring Resistance Between Ground And ETC Motor Negative Circuit At Appropriate Terminals Of Special Tool #8815
    GC0090960Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (K448) ETC Negative circuit using the appropriate terminal of special tool (special tool #8815A, Kit, NGC, 38 Position).

      Is the resistance below 100 ohms?

      Yes 

      • Repair the short to ground in the (K448) ETC Negative circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  10.
  10. ETC MOTOR 
    Fig 8: Measuring Resistance Between ETC Motor Positive Circuit And Negative Circuit At Appropriate Terminals Of Special Tool #8815
    GC0090837Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Take the following measurement using special tool (special tool #8815A, Kit, NGC, 38 Position) to avoid possible damage to the Throttle Body harness connector.

    1. Connect the Throttle Body harness connector.
    2. Measure the resistance of the ETC Motor between the (K447) ETC Positive circuit and the (K448) ETC Negative circuit at the appropriate terminals of special tool (special tool #8815A, Kit, NGC, 38 Position).

      Is the resistance between 2.5 and 25 ohms at closed throttle?

      Yes 

      • Go To  11.

      No 

      • Verify that there is good pin to terminal contact at the Throttle Body and the Powertrain Control Module connectors. Replace the Throttle Body Assembly if no problems were found in the connectors. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  11. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM).
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Throttle Body and the Powertrain Control Module connectors.
    4. Refer to any Technical Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      No 

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