P0230 Fuel pump relay command

			Test results
0	COMPONENT CONCERNED	PRELIMINARY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Engine management control unit	Check whether the error detail is "Overtemperature"	Go to Step 1	"Overtemperature" error detail	Replace the engine management control unit Op. 1060G80
1	COMPONENT CONCERNED	ELECTRICAL CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Fuel pump relay wiring	Check for a short circuit to Vbatt on the fuel pump relay wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT	Go to Step 2	Presence of short circuit to Vbatt.	Restore insulation to + battery
2	COMPONENT CONCERNED	ELECTRICAL CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Fuel pump relay wiring	Check for a short circuit to earth on the fuel pump relay wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT	Go to Step 3	Presence of short circuit to earth	Restore insulation to earth
3	COMPONENT CONCERNED	ELECTRICAL CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Fuel pump relay	Check for the presence of an open circuit on the fuel pump relay wiring See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT	End of diagnosis	Presence of open circuit	Restore the correct connections