P0093 Fuel press. (high press. pump input regulat.)

			Test results
1	COMPONENT CONCERNED	LOW PRESSURE CIRCUIT CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Low pressure circuit	Check that there are no leaks in the low pressure circuit	Go to Step 2	Leaks from the low pressure circuit	Restore the sealing of the system
2	COMPONENT CONCERNED	ELECTRICAL CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Low pressure pump wiring	Check the continuity of the wiring between pump and dashboard control unit	Go to Step 3	Wiring defective	Restore the correct wiring
3	COMPONENT CONCERNED	PUMP FUSE CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Low pressure pump fuse	Check the condition of the pump fuse	Go to Step 4	Blown pump fuse	Replace the fuse after ascertaining the cause of the malfunction
4	COMPONENT CONCERNED	PUMP RELAY SWITCH CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Low pressure pump relay switch	Check that the pump relay switch is working correctly	Go to Step 5	Relay defective	Replace the relay
5	COMPONENT CONCERNED	LOW PRESSURE PUMP CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Low pressure pump	Check that the low pressure pump is working correctly	Go to Step 6	Low pressure pump defective	Replace the low pressure pump Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
6	COMPONENT CONCERNED	FUEL RECIRCULATION PIPE CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Fuel recirculation pipe	Check that the fuel recirculation pipe is not clogged	Go to Step 7	Fuel pipe obstructed	Restore the fuel pipe
7	COMPONENT CONCERNED	ELECTRICAL CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Pressure regulator wiring	Check the continuity of the wiring between pressure regulator and engine management control unit	Go to Step 8	Wiring interrupted	Restore the correct continuity
8	COMPONENT CONCERNED	PRESSURE REGULATOR CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Pressure regulator	Check that the pressure regulator is working properly	Go to Step 9	Regulator not working correctly	Replace the high pressure pump Op. 1060E10
9	COMPONENT CONCERNED	HIGH PRESSURE PUMP CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	High pressure pump	Check that the high pressure pump is working properly	End of diagnosis	High pressure pump not working correctly	Replace the high pressure pump Op. 1060E10