Table 115
Troubleshooting Test Steps
Values Results
3. Check the DEF Quality
A. Use Tooling A to measure the Diesel Exhaust Fluid (DEF)
quality.
B. Use Tooling D to measure the DEF hydrocarbon contamination
level.
Refer to Systems Operation, Testing and Adjusting, “Diesel Ex-
haust Fluid Quality - Test” for the correct procedure.
Refer to Illustration 71 for an example of a good refractometer re-
sult. Refer to Illustration 72 for an example of a good test strip
result.
DEF quality
standards
Result: The DEF quality is within the acceptable range,
the DEF is free from hydrocarbons and a 4364-18
(E1309 (2)) code is active.
Proceed to Test Step 4.
Result: The DEF quality is not within the acceptable
range or Tooling D has indicated the presence of hydro-
carbon contamination.
Repair: Drain the DEF fluid from the tank. Refill the tank
with DEF that meets ISO 22241 quality standards.
Refer to Operation and Maintenance Manual, “Diesel Ex-
haust Fluid Tank - Flush” for the correct procedure.
Proceed to Test Step 11.
Illustration 73 g06179695
DEF line routing between components
218 UENR4469-36
Symptom Troubleshooting
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