Engine Controls - Motor Driven Throttle Valve (MDK)

Group 12
Engine Electrical

Bulletin Number
12 07 99

Woodcliff Lake, NJ
February 1999
Product Engineering

SUBJECT:
Motor Driven Throttle Valve (MDK)

MODEL:
E39 - 528ViA with M52TU engine produced 9/98 -
E46 - 323ViA & 328ViA with M52 TU engine produced 6/98 -
Z3 - Roadster with 2.5L/2.8L engine and Mcoupe with 2.8L engine produced 9/98 -

Situation:
Customer complains that the "Check Engine" lamp is illuminated and one or more of the following faults are set in the Engine Control Module (ECM/DME):




Cause:
The above listed faults may set as a result of the following:

1. Break/open in the wiring from the DME to the throttle motor (MDK).

2. Contamination of the actuator or potentiometers within the MDK.

Procedure:
If any of the above listed faults are set perform the following:

1. Using a breakout box check the wiring from the DME to the MDK for open or short to ground.

2. If the wiring is correct then the MDK should be replaced.

Parts Information:
Part Number Description Qty
13 54 1 433 414 Throttle Housing Assembly 1

Warranty Information:
Parts and labor will be reimbursable under the terms of the applicable BMW Emissions or New Vehicle Limited Warranty.

Defect Code: 1 3 54 91 96 00

Labor Operation: 13 54 031 - Replacing complete throttle assembly
Labor Allowance: E46 - 11 FRU
E39 - 12 FRU
Z3 - 12 FRU

OR Associated Work
Labor Operation: +13 54533 - Replacing complete throttle assembly
Labor Allowance: E46 - 10 FRU
E39 - 10 FRU
Z3 - 10 FRU


Note:
The following explanations will spell out the correct use of the work times.

Main Work:
Use this labor operation number when the only repair performed is the listed warranty repair.
OR
+Associated Work:
Use this labor operation number when other repairs or services are performed along with the listed warranty repair.

Under no circumstances should both labor operation numbers be claimed. Attempts to claim both times will result in an unnecessary delay in claim processing and payment.