Test Control unit Flash code: 1x long, 6x short Fault indication: Fault indicated by steady light at EDC indicator lamp Fault path: Control unit defective (processor coupling) Effect of fault: Engine is shut down by “no power applied to fuel delivery output stage” and control position 0. If this fault occurs only temporarily, the engine can be restarted by switching the “ignition” off and on again Possible cause Undervoltage (loose contact), control unit defective Test precondition: EDC control unit connected 50 Test Measurement Corrective measures Control unit This fault signal can also occur in the event of extremely low power supply (loose contacts or undervol- tage)!
Internal fault in control unit – Check lines – Check plug connections – Replace control unit