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.

ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, record all Freeze frame data.
3. With the scan tool, erase DTCs.
4. Turn the ignition off for 75 seconds.
5. Turn the ignition on, run the engine to operating temperature
6. Test drive the vehicle under normal operating conditions to induce the DEF system.
7. With the scan tool check for active DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
CHECK THE DEF LINES AND FITTINGS FOR LEAKS OR RESTRICTIONS
1. Turn the ignition off.
2. Visually inspect the DEF lines and fittings for signs of a leak.
3. Remove the lines from the fittings at the DEF Supply Pump Assembly and DEF Injector and inspect the fittings for signs of crystallization or blockages.
  Were any leaks or blockages found?
  
  Yes
  - Repair or replace the leaking or blocked lines or fittings as necessary.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Replace the DEF Pump Assembly Filter.
  - Go To 3
CHECK THE DEF PUMP ASSEMBLY
1. Reconnect all of the DEF lines.
2. Remove the DEF Injector from the Decomp Tube.
3. Place the DEF Injector in a container to capture the fluid sprayed.
4. Turn the ignition on.
5. With the scan tool, navigate to the Diesel Exhaust Fluid Injector Quantity Test.
  NOTE:
  This Test is broken up into three parts: 1-Air bleed/Build Pressure (about 30 seconds/then empty the container), 2-Main volume test (a little over one minute), 3-DEF purge (to remove excess fluid from the lines after the test). The entire procedure will run for 2-3 minutes before timing out. The amount of flow may fluctuate through out the test, therefore the test must be allowed to run completely in order for the results to be accurate. The fluid should spray out as a mist. There should be no dripping from the holes in the DEF Injector at any time during the duration of the test procedure.
6. Measure the amount of fluid sprayed after the test times out.
  Does the fluid sprayed measure between 29 ml and 33 ml?
  
  Yes
  - Repair complete.
  No
  - Replace the DEF Pump Supply Backflow connector and run the Override Test again. If the test fails with the new fitting then replace the DEF Pump Assembly in accordance with the service information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .