Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

OTHER DTCS
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.
  Were there any fuel system or air handling sensor DTCs present?
  
  Yes
  - Repair other DTCs before proceeding.
  No
  - Go To 2.
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 3.
  No
  - Replace the Exhaust Temperature Sensor that is out of range as compared to the others.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
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 4.
  No
  - Replace the Diesel Oxidation Catalyst in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR THE DIESEL OXIDATION CATALYST DAMAGED
1. Separate the exhaust and inspect the Diesel Oxidation Catalyst for internal damage or signs of face plugging.
  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 - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace the Diesel Oxidation Catalyst outlet temperature sensor.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .