Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
1. Start the engine and allow it to idle.
2. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE EGR AIRFLOW THROTTLE CONTROL VALVE
1. Remove the boot from the EGR Throttle Control Valve. Using a mirror, look at the butterfly valve on the inside of the EGR Throttle Control Valve.
2. Start the vehicle, let idle for 10 seconds.
3. Turn ignition off.
  NOTE:
  If functioning properly the EGR Throttle Control Valve will close immediately after the engine is shut down.
  
  Did the EGR Throttle Control Valve close immediately after the engine was shut down?
  
  Yes
  - Go To 4
  No
  - Go To 3
CHECK THE EGR AIRFLOW CONTROL VALVE FOR BINDING OR STICKING
1. Turn the ignition off.
2. Check the butterfly valve for signs of a physical obstruction.
  Was there an obstruction found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace the EGR Airflow Control Valve in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK FOR HIGH RESISTANCE IN THE (K672) AIR INTAKE THROTTLE SENSOR SIGNAL CIRCUIT
1. Disconnect the EGR Airflow Control Valve harness connector.
2. Disconnect the PCM C1 harness connector.
3. Measure the resistance between ground and the (K672) Air Intake Throttle Sensor Signal circuit at the EGR Airflow Control Valve harness connector.
  Is the resistance below 10k 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. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE EGR AIRFLOW CONTROL VALVE
1. Turn the ignition off.
2. Reconnect the PCM harness connector.
3. Reconnect the EGR Airflow Control Valve harness connector.
4. Ignition on, engine not running.
5. With the scan tool, erase DTCs.
6. While monitoring the scan tool, disconnect the EGR Airflow Control Valve harness connector.
7. With the scan tool, read DTCs.
  Is DTC P02E9 active?
  
  Yes
  - Replace the EGR Airflow Control Valve in accordance with the Service Information. Refer to VALVE, EXHAUST GAS RECIRCULATION (EGR) AIRFLOW CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 6
POWERTRAIN CONTROL MODULE
1. Disconnect all PCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Freeze Frame and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read PCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL .
  - Perform the PCM VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Test complete.
  - Perform the PCM VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .