Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

ACTIVE DTC
NOTE:
Low battery voltage can cause excessive current draw in very hot and very cold ambient temperatures. Look closely at the temperatures at which this DTC set and make sure the battery can pass a load test before continuing.

NOTE:
Diagnose and repair any other DTCs set in the PCM before proceeding with this test.
1. Turn the ignition on.
2. With the scan tool, select View DTCs and review the DTC environmental information.
  Is the good trip counter greater than 0?
  
  Yes
  - Refer to STANDARD PROCEDURE and perform the INTERMITTENT CONDITION diagnostic procedure.
  No
  - Go To 2.
THROTTLE PLATE INSPECTION
1. Turn the ignition off.
2. Remove the air cleaner assembly.
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 problems found?
  
  Yes
  - 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 .
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
  No
  - Go To 3.
DIRTY AIR FILTER
1. Remove and inspect the air filter.
  Were any problems found?
  
  Yes
  - Replace the air filter.
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
  No
  - Go To 4.
CONTAMINATED FUEL
1. Inspect the fuel for contamination. (dirt, water, or other foreign material)
  Were any problems found?
  
  Yes
  - Drain the fuel from the fuel tank into an approved gas holding tank and add clean fuel. Refer to FUEL DELIVERY, GAS .
  No
  - Go To 5.
EXCESSIVE RESISTANCE IN THE (K447) ETC MOTOR (+) CIRCUIT
1. Turn the ignition off.
2. Using a voltmeter, perform a voltage drop test by backprobing the (K447) ETC Motor (+) circuit at the Throttle Body harness connector and by probing the PCM C2 harness connector. Make sure the voltmeter leads are connected so that 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 can result in possible serious or fatal injury.
3. Start the engine.
  Is the voltage below 0.5 volt?
  
  Yes
  - Go To 6.
  No
  - Repair the (K447) ETC Motor (+) for excessive resistance.
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
EXCESSIVE RESISTANCE IN THE (K448) ETC MOTOR (-) CIRCUIT
1. Turn the ignition off.
2. Move the Voltmeter leads to backprobe 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.
  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.
  Is the voltage below 0.5 volt?
  
  Yes
  - Go To 7.
  No
  - Repair the (K448) ETC Motor (-) for excessive resistance.
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
THROTTLE BODY

Fig 1: Checking ETC Motor Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the C2 PCM harness connector.
3. Measure the resistance of the ETC Motor by probing the PCM C2 harness connector for the (K447) ETC Motor (+) circuit and the (K448) ETC Motor (-) 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 .
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
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.
4. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Refer to STANDARD PROCEDURE and perform the POWERTRAIN VERIFICATION.