Test results
1
COMPONENT CONCERNED
ENGINE MANAGEMENT CONTROL UNIT WIRING CHECK
OK (NO FAULTS DETECTED)
FAULT DETECTED
OPERATION
Engine management control unit wiring
Check for a possible short circuit to earth on the engine control unit wiring
Go to Step 2
Presence of short circuit to earth
Restore correct insulation to earth
2
Go to Step 3
3
Check for a possible open circuit on the engine control unit wiring
End of diagnosis
Presence of open circuit
Restore the correct continuity