Contents

			Test results
1	COMPONENT CONCERNED	ELECTRICAL CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Connections on the pressure sensor	Check for loose electrical connections at the intake pressure sensor and at the engine management control unit.	Go to Step 2	Presence of loose electrical connections.	Restore the correct connections.
2	COMPONENT CONCERNED	WIRING CONTINUITY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Pressure sensor wiring	Check for breaks in the wiring continuity	Go to Step 3	Breaks in the wiring continuity.	Restore the correct continuity for the wiring.
3	COMPONENT CONCERNED	WIRING INSULATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Pressure sensor wiring	Check the condition of the wiring insulation	Go to Step 4	Wiring insulation faulty.	Restore correct wiring insulation.
4	COMPONENT CONCERNED	EARTH CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Pressure sensor wiring	Check the continuity of the earth connections.	Go to Step 5	Breaks in the wiring continuity.	Restore the correct earth connections.
5	COMPONENT CONCERNED	INTAKE PRESSURE SENSOR OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Pressure sensor	Check that the intake pressure sensor is working correctly	End of diagnosis	Intake pressure sensor not working correctly.	Replace the intake pressure sensor Op. 1056B54 INTAKE AIR PRESSURE/TEMPERATURE SENSOR - R.R.