Exhaust System Diagnostics: Test
WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
It is unlawful to tamper with or remove any component of the after treatment system. It is also unlawful to use a diesel exhaust fluid (DEF) that does not meet the specifications provided or to operate the vehicle/equipment without DEF.
CAUTION:
To avoid possible Diesel Exhaust Fluid (DEF) system damage and performance issues, never add water or any other fluid other than that what is specified to the DEF tank. Specified DEF fluid concentration is critical to proper engine and after treatment system performance.
CAUTION:
Cummins Inc. is not responsible for malfunctions or damage resulting from what Cummins Inc. determines to be abuse or neglect, including, but not limited to: operation without correctly specified diesel exhaust fluid, lack of maintenance of the after treatment system, improper storage or shutdown practices, or unauthorized modifications of the engine and after treatment system. Cummins Inc. is also not responsible for malfunctions caused by incorrect diesel exhaust fluid, water, dirt, or other contaminants in the diesel exhaust fluid. Follow the instructions provided with the service tool.
- To test the concentration of the DEF, use tool.
Tool number
: - (J-54466)
NOTE: The concentration of the DEF must be 32.5 ± 0.7 percent by weight. When measuring concentration with tool, the acceptable DEF measurement specification is 32.5 ± 1.5 percent. This specification takes into consideration the tool tolerances, variability and calibration when measuring DEF concentration. - If the DEF concentration is found to be outside of this specification, drain the DEF tank, flush with distilled water, and fill with new and/or known good DEF. Check the DEF concentration.
- Concentration of the DEF should be checked when:
- The vehicle has been stored for an extended period of time.
- It is suspected that water has been added to the DEF tank.