Diagnostic Test

ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Ignition on, engine not running.
  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. Start the engine.
3. Allow the engine to reach normal operating temperature.
4. With a scan tool, read DTCs.
  NOTE:
  It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data.
  
  Is the DTC Active or Pending at this time?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
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, dirt, or excessive carbon build up) 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
DIRTY AIR FILTER
1. Remove and inspect the Air Filter.
  Is the Air Filter dirty?
  
  Yes
  - Replace the Air Filter.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CONTAMINATED FUEL
1. Inspect the Fuel for contamination. (Dirt, water, or other foreign material)
  Is the fuel contaminated?
  
  Yes
  - Drain the Fuel from the fuel tank into an approved gas holding tank and add clean fuel. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
EXCESSIVE RESISTANCE IN THE (K447) ETC POSITIVE CIRCUIT
1. Turn the ignition off.
2. Using a Voltmeter perform a voltage drop test. Back probe the (K447) ETC Positive circuit at the Throttle Body harness connector and PCM C2 harness connector. Make sure the Voltmeter leads are connected so a positive polarity is displayed on the Voltmeter.
  WARNING:
  When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
3. Start the engine and allow it to reach normal operating temperature.
4. Monitor the Voltmeter.
  Is the voltage below 0.5 volt?
  
  Yes
  - Go To 6
  No
  - Repair the excessive resistance in the (K447) ETC Positive circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
EXCESSIVE RESISTANCE IN THE (K448) ETC NEGATIVE CIRCUIT
1. Turn the ignition off.
2. Move the Voltmeter leads to back probe the (K448) ETC Negative circuit at the Throttle Body harness connector and the PCM C2 harness connector. Make sure the Voltmeter leads are connected so a positive polarity is displayed on the Voltmeter.
3. Start the engine and allow it to reach normal operating temperature.
4. Monitor the Voltmeter.
  Is the voltage below 0.5 volt?
  
  Yes
  - Go To 7
  No
  - Repair the excessive resistance in the (K448) ETC Negative circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
ETC MOTOR

Fig 1: Checking ETC Motor Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Connect the Throttle Body harness connector.
3. Measure the resistance of the ETC Motor by probing the PCM C2 harness connector for the (K447) ETC Positive circuit and the (K448) ETC Negative circuit.
  Is the resistance between 2.5 and 25 ohms at closed throttle?
  
  Yes
  - Go To 8
  No
  - Verify that there is good pin to terminal contact in the Throttle Body and 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. Refer to THROTTLE BODY, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body Assembly 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 Powertrain Control Module connectors.
4. Perform any Technical Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .