Engine Controls - EMS2K DME Programming Hints

Engine Controls - EMS2K DME Programming Hints

Service Measure

Engine Electrical

M12 200 03

07/29/2003

Subject

Cooper, Cooper S: EMS2K Reprogramming Helpful Hints

Complaint

During EMS2K (DME) programming, the programming process is interrupted. Vehicle cannot be restarted, and EMS2K is not responding to

DIS/GT1 interrogation.

Cause

Excessive voltage fluctuation during programming which de-energizes the main DME relay is the most likely cause.

Measure

Important:

When programming use Deutronic battery charger (PN 99 00 0 003 944 available from Parts Department) set to the "Power Supply" mode.

In the case that the DME programming interruption occurred:

1. Manually power-up the DME by jumping the main relay's (K6300) terminals 30 (power supply) and 87 (power output to DME). In order to do

this, remove the main relay from its socket (DME relay is located in the fuse box, in engine compartment). Jump corresponding terminals in

the relay connector (KL30 & KL87) with fused jumper cable (e.g. PN 88 88 6 611 476). After DME reset is performed, install the main relay

back in its connector.

2. Perform full battery reset by connecting both battery cables through the fused jumper cable (e.g. PN 88 88 6 611 476) for approximately 30

seconds.

3. After DME and battery resets are performed, start the programming process from the beginning.

4. If DME is still not responding, contact Technical Hotline - Drivetrain.

After an approval/contact number is obtained from Technical Hotline, ship (using Fed-Ex only), the DME control module for reprogramming

to:

BMW Service Engineering/Drivetrain