Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
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 for one minute.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
CHECK THE (K673) AIR INTAKE THROTTLE MOTOR (+) CIRCUIT FOR A SHORT TO VOLTAGE
1. Disconnect the PCM C1 harness connector.
2. Disconnect the EGR Airflow Control Valve harness connector.
3. Measure the voltage on the (K673) Air Intake Throttle Motor (+) circuit at the EGR Airflow Control Valve harness connector.
  Is there voltage present?
  
  Yes
  - Repair the (K673) Air Intake Throttle Motor (+) circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (K673) AIR INTAKE THROTTLE MOTOR (+) CIRCUIT FOR A SHORT TO THE (K834) 5 VOLT SUPPLY CIRCUIT
1. Measure the resistance between the (K673) Air Intake Throttle Motor (+) circuit and the (K834) 5 Volt Supply circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the short between the (K673) Air Intake Throttle Motor (+) circuit and the (K834) 5 Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
CHECK THE (K674) AIR INTAKE THROTTLE MOTOR (-) CIRCUIT FOR A SHORT TO VOLTAGE
1. Measure the voltage on the (K674) Air Intake Throttle Motor (-) circuit at the EGR Airflow Control Valve harness connector.
  Is there voltage present?
  
  Yes
  - Repair the (K674) Air Intake Throttle Motor (-) circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
CHECK THE (K674) AIR INTAKE THROTTLE MOTOR (-) CIRCUIT FOR A SHORT TO THE (K834) 5 VOLT SUPPLY CIRCUIT
1. Measure the resistance between the (K674) Air Intake Throttle Motor (-) circuit and the (K834) 5 Volt Supply circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the short between the (K674) Air Intake Throttle Motor (-) circuit and the (K834) 5 Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
CHECK THE (K674) AIR INTAKE THROTTLE MOTOR (-) CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K674) Air Intake Throttle Motor (-)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 7
  No
  - Repair the (K674) Air Intake Throttle Motor (-) circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
CHECK THE (K673) AIR INTAKE THROTTLE MOTOR (+) CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K673) Air Intake Throttle Motor (+) 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 8
  No
  - Repair the (K673) Air Intake Throttle Motor (+) circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
EGR AIRFLOW CONTROL VALVE
1. Replace the EGR Airflow Control Valve in accordance with the Service Information.
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. 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 - 6.7L. Refer to STANDARD PROCEDURE .
  No
  - Repair complete.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .