DME Main Relay
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Check function:
•D• 2 - With ignition ON or during engine operation, the main relay is actuated with ground potential at terminal 85 (display: ON). The relay switches on and supplies voltage to the control units DME, EGS, EML and ABS.
Possible cause:
- Wire to the DME control unit Pin 27 defective
- Relay 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 27 (display: OFF) although the above points are OK.