Main Relay (Computer/Fuel System): Service and Repair

- Switch off ignition.




- Unfasten screws.
- Remove cover from electronics.

Installation Note:
Tightening Torque: 4.4 Nm.




- Remove relay (2).

NOTE: If relay allocation does not coincide with pattern:
- The relay with a line cross section greater than 2.5 mm square is the DME master relay.
- If in doubt, remove relay from socket and check whether there is an interrupt in the desired function.

Installation Note: Interrogate fault memory of DME/DDE control unit, check fault messages stored in memory, rectify faults and cancel fault memory.




Notes on Troubleshooting:
- If the starter engine turns the engine when switched on, but if the engine fails to fire, check the engine fuses (2). If these fuses are defective, replace all fuses together with the bracket.
- The cause for fuses melting should be sought for.