Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

OTHER DTCS PRESENT
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.
  Are there any Aftertreatment, fuel system, or air handling sensor DTCs present?
  
  Yes
  - Repair the other DTCs before proceeding.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 2
CHECK FOR LEAKS IN THE EXHAUST SYSTEM
1. Perform the CHECKING THE EXHAUST SYSTEM FOR LEAKS diagnostic procedure. Refer to DIAGNOSIS AND TESTING .
  Were any exhaust leaks found?
  
  Yes
  - Repair the Exhaust System leak.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 3
CHECK THE EXHAUST TEMPERATURE SENSORS
1. Turn the ignition off for five minutes to allow the Exhaust Temperature Sensors to stabilize.
2. Turn the ignition on.
3. With the scan tool check the temperature values of the Exhaust Temperature Sensors.
  Are the Exhaust Temperature Sensors reading within 6°C (43°F) of each other?
  
  Yes
  - Go To 4
  No
  - Replace the Exhaust Temperature Sensor that is out of range compared to the others.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK FOR THE DIESEL OXIDATION CATALYST MISSING
1. Visually inspect the Aftertreatment exhaust system.
  Is the Diesel Oxidation Catalyst installed on the vehicle?
  
  Yes
  - Go To 5
  No
  - Replace the Diesel Oxidation Catalyst in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE DIESEL OXIDATION CATALYST FOR DAMAGE
1. Separate the exhaust and inspect the Diesel Oxidation Catalyst for internal damage, signs of face plugging or leaks around the system.
  Was any internal damage found in the Diesel Particulate Filter?
  
  Yes
  - Replace the Aftertreatment Diesel Oxidation Catalyst in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Replace the Exhaust Catalyst Temperature Sensor in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .