Main Relay Control (DME Relay 2)

Main Relay Control (DME relay 2):

Check function:

•D• 100 - This status inquiry is only possible as of model '89. With ignition ON or during engine operation, the main relay is activated with ground potential at terminal 85 (display: ON). The relay switches on and supplies the control units DME, EGS, EML and ABS with voltage.

Possible causes:

- Wire to DME control unit Pin 36 defective

- Relay 2 or voltage supply not OK.

- Voltage supply for DME control unit not OK.

- The control unit is defective if no ground potential is output at control unit Pin 36 although the above points are OK.