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
NOTE:
Perform the diagnostics for any other DEF system DTCs that are present with this fault before continuing.
1. Turn the ignition on for one minute, engine not running.
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 diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK FOR LEAKING DEF SUPPLY LINE OR DEF PRESSURE LINE
1. Turn the ignition off.
2. Visually inspect the DEF Supply and DEF Pressure Lines and fittings for signs of a fluid leak.
  Was a leak found in the DEF system?
  
  Yes
  - Repair or replace the DEF Lines in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4.
CHECK THE DEF SUPPLY PUMP INLET FITTING AND DEF SUPPLY LINE
1. Remove the DEF Supply Line.
2. Inspect the DEF Supply Pump fitting for blockage or debris.
3. Using regulated low pressure shop air, check the DEF Supply Line for a restriction. Blow the air in the opposite direction of the fluid flow.
  Were any restrictions found?
  
  Yes
  - Perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 5.
CHECK THE DEF SUPPLY PUMP FILTER
1. Reinstall the DEF Supply Line.
2. Remove and inspect the DEF Supply Pump Filter.
  Is the DEF Supply Pump Filter blocked or restricted?
  
  Yes
  - Replace the DEF Supply Pump Filter in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 6.
CHECK THE DEF TANK FILTER
1. Reinstall the DEF Supply Pump Filter.
2. Remove the DEF Tank Level/Temperature Sensor Assembly and inspect the DEF Tank Filter.
  Is the DEF Tank Filter blocked or restricted?
  
  Yes
  - Replace the DEF Tank Level/Temperature Sensor Assembly in accordance with the service information. Refer to SENSOR, Diesel Exhaust Fluid Level/Temperature , Removal .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - 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 .