Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
If there are Mass Airflow Sensor and Turbocharger DTCs present with this DTC, repair the (F348) 12-volt Supply circuit for an open or short to ground condition.
1. Turn the ignition on.
2. With the scan tool, record all Freeze frame data.
3. With the scan tool, erase DTCs.
4. Turn the ignition off for 75 seconds.
5. Start the engine and let idle.
6. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE (K672) AIR INTAKE THROTTLE SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

Fig 1: Checking Air Intake Throttle Sensor Signal Circuit For Short To Voltage
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the EGR Airflow Control Valve harness connector.
3. Measure the voltage on the (K672) Air Intake Throttle Sensor Signal circuit at the EGR Airflow Control Valve harness connector.
  Is the voltage reading above 5.1 Volts?
  
  Yes
  - Repair the (K672) Air Intake Throttle Sensor Signal circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3.
CHECK FOR THE (K672) AIR INTAKE THROTTLE SENSOR SIGNAL CIRCUIT SHORTED TO THE (F857) 5-VOLT SUPPLY CIRCUIT

Fig 2: Checking For Air Intake Throttle Sensor Signal Circuit Shorted To 5-Volt Supply Circuit
Courtesy of CHRYSLER LLC
1. Disconnect the PCM C1 harness connector.
2. Measure the resistance between the (K672) Air Intake Throttle Sensor Signal circuit and the (F857) 5-Volt Sensor Supply Circuit at the EGR Airflow Control Valve harness connector.
  Is the resistance above 10k Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the short between the (K672) Air Intake Throttle Sensor Signal circuit and the (F857) 5-Volt Sensor Supply Circuit.
  - Perform the POWERTRAIN VERIFICATION TEST TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K672) AIR INTAKE THROTTLE SENSOR SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 3: Checking For Open Or High Resistance In Air Intake Throttle Sensor Signal Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K672) Air Intake Throttle Sensor Signal circuit between the EGR Airflow Control Valve harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K672) Air Intake Throttle Sensor Signal circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
EGR AIRFLOW CONTROL VALVE
1. Replace the EGR Airflow Control Valve.
2. Reconnect the EGR Airflow Control Valve harness connector.
3. Reconnect the PCM C1 harness connector.
4. Turn the ignition on.
5. With the scan tool, erase DTCs.
6. Turn the ignition off for 75 seconds.
7. Start the engine and let idle.
8. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace Powertrain Control Module in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .