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.
- OTHER DTCs
- Ignition on, engine not running.
- With the scan tool, read DTCs.
Are any other DTCs Active?
Yes
- Repair other DTCs before proceeding.
No
- Go To 2
- CHECK FOR THE AFTERTREATMENT SCR CATALYST MISSING
- Check the exhaust system to see if the Aftertreatment SCR Catalyst has been removed.
Is the Aftertreatment SCR Catalyst present in the system?
Yes
- Go To 3
No
- Replace the Aftertreatment SCR Catalyst in accordance with the service information
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
- Check the exhaust system to see if the Aftertreatment SCR Catalyst has been removed.
- CHECK FOR AN EXHAUST LEAK
- Perform the CHECKING THE EXHAUST SYSTEM FOR LEAKS diagnostic procedure. Refer to DIAGNOSIS AND TESTING, 6.7L
.
Are leaks found?
Yes
- Repair or replace as necessary.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
No
- Go To 4
- Perform the CHECKING THE EXHAUST SYSTEM FOR LEAKS diagnostic procedure. Refer to DIAGNOSIS AND TESTING, 6.7L
.
- EXHAUST TEMPERATURE
- SCR EXHAUST TEMPERATURE SENSORS
- Start the engine.
- Raise the engine speed to 2500 RPM for two minutes.
Does the temperature readings of all three SCR Exhaust Temperature Sensors change in value at least 5°F?
Yes
- Go To 7
No
- Replace the Exhaust Temperature Sensor that did not change in value by at least 5°F or is not updating.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
- SCR EXHAUST TEMPERATURE SENSORS
- Start the engine and allow it to idle for 10 minutes.
- With the scan tool, read the values of all three Exhaust Temperature Sensors.
Do all three temperature sensors read above 150°F and are the values of the temperature sensors updating?
Yes
- Go To 7
No
- Replace the Exhaust Temperature Sensor that is not above 150°F or is not updating on the scan tool.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
- CHECK THE CHARGE AIR COOLING SYSTEM FOR CONTAMINATION DAMAGING THE AFTERTREATMENT DIESEL OXIDATION CATALYST
- Separate the exhaust plumbing from the Turbocharger outlet.
- Inspect for signs of oil, coolant or fuel being introduced into the aftertreatment system from the engine or signs of moisture in the Turbocharger exhaust outlet.
Is contamination found in the turbocharger exhaust outlet?
Yes
- Identify and repair the source of the contamination within the engine and replace the Aftertreatment Diesel Oxidation Catalyst after the engine failure has been repaired.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
No
- Go To 8
- CHECK AFTERTREATMENT SCR CATALYST, SCR INLET/ MIDBED/ OUTLET TEMPERATURE SENSORS, AND EXHAUST DECOMPOSITION TUBE
- Remove the Aftertreatment SCR Catalyst, SCR Exhaust Temperature Sensors, and Exhaust Decomposition Tube to inspect for damage or presence of face plugging.
Are the components found to be missing, plugged or damaged during the inspection of the Aftertreatment SCR Catalyst and temperature sensors?
Yes
- Replace or repair damaged component(s).
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to STANDARD PROCEDURE .
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
- Remove the Aftertreatment SCR Catalyst, SCR Exhaust Temperature Sensors, and Exhaust Decomposition Tube to inspect for damage or presence of face plugging.