Engine - Change In Eng. Harness T-Stat Electrical Connector

SI M12 06 12
Engine

October 2012
Technical Service

This Service Information bulletin supersedes SI M17 04 12 dated July 2012.

[NEW] designates changes to this revision

SUBJECT
Change in Thermostat Electrical Connector on Replacement Engine Harness

MODEL
All models with N16 built up to 3/2012

SITUATION
Vehicles produced 3/2012 and later are no longer equipped with an engine coolant thermostat that incorporates the engine coolant temperature sensor. The engine coolant temperature sensor is now an individual component.

To accommodate this component change, there was also a production change to the engine wiring harness; this also includes the replacement engine harnesses for earlier produced vehicles. The replacement harness is no longer equipped with the four pin connector for the thermostat / engine coolant temperature sensor, but two separate two-pin connectors, one the the coolant thermostat and one for the engine coolant temperature sensor.

PROCEDURE
When replacing the engine harness for applicable vehicles with the N16 engine produced prior to 3/2012, the engine thermostat must also be replaced (first harness replacement only).

Refer to Repair Instruction 11 53 000, "Removing and installing or replacing coolant thermostat (N16)."

[NEW] Note:
Vehicles that are in for this repair may have already had a Service Action performed where the engine temperature sensor was previously replaced (, , , , or ).

[NEW] In these cases, remove the adapter harness from the remote engine temperature sensor when replacing the engine wiring harness together with the thermostat (P/N 11 53 7 534 521). The coolant hose with the remote engine temperature sensor can remain in the vehicle.





PARTS INFORMATION

WARRANTY INFORMATION
Not applicable