Contents

			Test results
1	COMPONENT CONCERNED	ELECTRICAL CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Connections on pressure sensor and Powertrain Control Module	Check for loose electrical connections at the intake pressure sensor and at the Powertrain Control Module.	Go to Step 2	Presence of loose electrical connections.	Restore the correct connections.
2	COMPONENT CONCERNED	WIRING CONTINUITY CHECK BETWEEN PRESSURE SENSOR AND POWERTRAIN CONTROL MODULE	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between pressure sensor and Powertrain Control Module	Check for continuity breaks on the wiring between the pressure sensor and pin 12 of the Powertrain Control Module	Go to Step 3	Breaks in the wiring continuity.	Restore the correct continuity for the wiring.
3	COMPONENT CONCERNED	WIRING CHECK BETWEEN PRESSURE SENSOR AND POWERTRAIN CONTROL MODULE	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between pressure sensor and Powertrain Control Module	Check for short circuits to earth on the wiring between the pressure sensor and pin 12 of the Powertrain Control Module	Go to Step 4	Presence of short circuits to earth on the wiring.	Restore the correct wiring insulation to earth.
4	COMPONENT CONCERNED	EARTH CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between pressure sensor and Powertrain Control Module	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 properly.	Replace the intake pressure sensor Op. 1056B54 INTAKE AIR PRESSURE/TEMPERATURE SENSOR - R.R.