Engine Controls - MIL ON, DTC's P0671-3/P0674 Set

01 MIL on, DTC(s) P0671, P0672, P0673 and/or P0674 Stored in ECM Fault Memory

28 12 20

2029715/1

June 5, 2012.





Affected Vehicle

Condition
MIL on, DTC(s) P0671, P0672, P0673 and/or P0674 Stored in ECM Fault Memory.

Technical Background








Internal hardware issue of the glow plug relay may cause an over voltage supply to the glow plug(s) damaging the heating element (Figures 1 and 2).

Production Solution
Improved glow plug relays implemented in production and spare parts.

Service
If faults P0671, P0672, P0673 and/or P0674 are stored in the ECM fault memory, replace the glow plug relay and the affected glow plug.

See Repair Manual Group 28 in ElsaWeb.





Warranty





Required Parts and Tools

Additional Information
All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.