Test Engine overspeed Flash code: 1x long, 7x short Fault indication: Fault indicated by steady light at EDC indicator lamp Fault path: Engine overspeed Effect of fault: Fuel delivery is interrupted. EHAB is deactivated. If no other fault is applicable, fuel delivery is continued on exiting engine overspeed Possible cause Control rod moves stiffly. Injection pump defective, control unit defective, wiring harness defective 51 Test Measurement Corrective measures If no other faults exist, no further action is necessary – Delete fault code memory Injection pump If the fault occurs more frequently check injection pump, control unit and cables.
– Replace lines – Replace control unit – Replace injection pump