Contents

			Test results
1	COMPONENT CONCERNED	ELECTRICAL CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Connections on air temperature sensor and Powertrain Control Module	Check for loose electrical connections at the air temperature 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 AIR TEMPERATURE SENSOR AND POWERTRAIN CONTROL MODULE	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between air temperature sensor and Powertrain Control Module	Check for continuity breaks on the wiring between the air temperature sensor and pin 18 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 INSULATION CHECK BETWEEN AIR TEMPERATURE SENSOR AND POWERTRAIN CONTROL MODULE	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between air temperature sensor and Powertrain Control Module.	Check the correct insulation of the wiring between the air temperature sensor and pin 18 of the Powertrain Control Module.	Go to Step 4	Fault in the wiring insulation.	Restore the correct insulation for the wiring.
4	COMPONENT CONCERNED	EARTH CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Air temperature sensor wiring	Check the condition of the earth connections.	Go to Step 5	Breaks in the wiring continuity.	Restore the correct earth connections.
5	COMPONENT CONCERNED	AIR TEMPERATURE SENSOR OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Air temperature sensor	Check that the air temperature sensor is working properly	End of diagnosis	Air temperature sensor not working properly.	Replace the intake pressure sensor Op. 1056B54 INTAKE AIR PRESSURE/TEMPERATURE SENSOR - R.R.