Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

CHECK THE DEF TANK LEVEL AND FLUID
1. Verify the DEF Tank level.
2. Check the fluid for signs of contamination.
  Is the fluid level in the DEF Tank above the minimum requirement and free of contamination?
  
  Yes
  - Go To 2.
  No
  - Fill the DEF Tank to the proper level with clean Diesel Exhaust Fluid. If the fluid is contaminated, perform the cleaning procedure. Refer to TANK, Diesel Exhaust Fluid , Cleaning .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, navigate to Systems Tests and actuate the Diesel Exhaust Fluid Doser Pump Override Test.
3. With the scan tool, View DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE DEF SUPPLY SYSTEM FOR LEAKS
1. During the actuation of the Diesel Exhaust Fluid Doser Pump Override Test, visually inspect the DEF Supply Pump Assembly and DEF Lines for signs of a fluid leak.
  Are there any leaks in the DEF System?
  
  Yes
  - Perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4.
CHECK THE DEF SUPPLY LINE
1. Stop actuation of the Diesel Exhaust Fluid Doser Pump Override Test.
2. Turn the ignition off.
3. Remove the DEF Supply Line.
4. Check the DEF Supply Line for a restriction and check for crystallization on the DEF Supply Pump Assembly inlet fitting.
  Is the DEF Supply Line and DEF Supply Pump Assembly fitting free of obstructions?
  
  Yes
  - Replace the DEF Supply Pump Assembly in accordance with the service information. Refer to ASSEMBLY, Diesel Exhaust Fluid Pump , Removal .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Clear the restriction from the DEF Supply Line or DEF Supply Pump Assembly inlet fitting.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .