Reductant pick-up unit, T4002
Check the reductant pick-up unit circuit.Check the CAN cable harness between EEC and the reductant pick-up unit.Renew the reductant pick-up unit if there are no electrical faults on the CAN cable harness. Further information about the electrical cables and pins on the control unit to which the component is connected is available in SDP3 under the tab Check for the relevant component. There is a general description of the different troubleshooting methods for electrical faults in the Workshop Manual, subgroup 16-70.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
CAN communication to the reductant pick-up unit is interrupted.
Electrical fault in the reductant pick-up unit circuit.Fault in CAN communication between the EEC and the reductant pick-up unit.Internal electrical fault in the reductant pick-up unit.