Range Selector Position

Range selector position is still provided directly to the EWS III (3.2) control module from the Transmission Range Selector Switch. Redundant information is provided over the K-Bus in case of loss of signal from the range switch.

Workshop Hint: 

If the starter engages the following inputs are functioning normally:

• Key.
• Code Function
• Trans Range (Clutch Switch).
• Engine Speed.

Don't waste time diagnosing these inputs.

Fig 1: Identifying Range Selector Position Functions

Courtesy of BMW OF NORTH AMERICA, INC.

13 pin cable adapter P/N

61 3 190 for EWS III (3.2) diagnosis.