CAN based reductant tank pickup, short circuit to ground
Check for short circuit to ground failure on the pins on the EEC control unit (E67) that is connected to the reductant tank pickup (T116) supply. For a detailed harness and pin description see the electrical component, under the check tab, in the diagnostic tool. For a general description about different methods for electrical failure checks see the work shop manual subgroup 16-70.
What you'll see
No driver-visible symptom recorded.
System reaction
The SCR reductant dosing is stopped, which leads to higher emissions.
Diagnostic depth
The EEC control unit (E67) is indicating a short circuit to ground fault on the supply pins for the CAN based tank pickup (T116)
Short circuit to ground fault on the wiring to the CAN based reductant pickup unit (T116) Broken reductant tank pickup unit (T116)