Work Procedure: Setup
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.
WARNING:
To reduce the risk of personal injury, do not get Diesel Exhaust Fluid (DEF) in your eyes as it contains urea. In case of contact, immediately flush eyes with large amounts of water for a minimum of 15 minutes. Do not swallow. In the event DEF is ingested, contact a physician immediately. Reference the Safety Data Sheet (SDS) for additional information.
CAUTION:
- To avoid damage, do not kink or bend tubing or lines. Ensure all tubes and lines are routed and installed properly and care is given during the disassembly and assembly process. Failure to do so can result in damage to the tubes, lines or surrounding components.
- To avoid damage to the Diesel Exhaust Fluid (DEF) system dosing valve, never connect to a 12 or 24 volt DC power source.
NOTE:
It is usually easier to capture the DEF in a clean container and then transfer it to the measuring device for the final measurement.
Obtain a clear plastic container (large enough to hold the after treatment DEF dosing valve) and a graduated beaker, or equivalent. A measuring cup that is marked in milliliters (ml) or ounces (oz) can also be used.
The measuring device must be capable of measuring between 0 ml (0.0 oz) and 500 ml (17.0 oz) in 5 ml (0.34 oz) increments
- Connect the electrical and DEF lines.
- Place the after treatment DEF dosing valve into the container.
- When the test begins, briefly monitor the spray pattern of the DEF exiting the after treatment DEF dosing valve. Check for the following:
- Signs of larger drops and/or dripping DEF from the tip.
- Spray pattern that is not symmetrical (sprays more to one side).
NOTE:
- When the test is started, the dosing system will first prime. During this process, the after treatment DEF dosing valve will open intermittently to purge air from the system. In doing so, some DEF will be sprayed from the tip. This is a normal operating characteristic.
- When the test is being performed, the after treatment DEF dosing valve will spray a very fine mist of DEF. To prevent fine mist from escaping into the air and to make sure of an accurate measurement, place a clean shop towel or cover over the valve and container.