Contents

			Test results
1	COMPONENT CONCERNED	CHECK WIRING BETWEEN TYRE PRESSURE CONTROL UNIT AND BODY COMPUTER	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Wiring between tyre pressure control unit and Body Computer	Check that the CAN connections between the tyre pressure control unit and Body Computer are not faulty. In particular, check that there are no open circuit or short circuit problems.	Go to Step 2	There are faulty connections	Restore or, if necessary, replace the wiring
2	COMPONENT CONCERNED	BODY COMPUTER CONTROL UNIT CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Body Computer connections	Disconnect/reconnect the Body Computer control unit connectors and check for loose pins	Go to Step 3	Presence of a loose pin	Restore the correct operation of the connector
3	COMPONENT CONCERNED	TYRE PRESSURE CONTROL UNIT CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Tyre pressure control unit connections	Disconnect/reconnect the tyre pressure control unit connectors and check for the presence of loose pins	Go to Step 4	Presence of a loose pin	Restore the correct operation of the connector
4	COMPONENT CONCERNED	BODY COMPUTER CONTROL UNIT SUPPLY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Body Computer supply	Check that the supply for the Body Computer control unit is correct	Go to Step 5	Power supply not correct	Restore the correct power supply
5	COMPONENT CONCERNED	TYRE PRESSURE CONTROL UNIT SUPPLY CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Tyre pressure control unit supply	Check that the power supply for the tyre pressure control unit is correct	Go to Step 6	Power supply not correct	Restore the correct power supply
6	COMPONENT CONCERNED	BODY COMPUTER CONTROL UNIT OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Body Computer	Check that the Body Computer control unit is working properly	Go to Step 7	The Body Computer is not working correctly	Replace Body Computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.
7	COMPONENT CONCERNED	TYRE PRESSURE CONTROL UNIT OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Tyre pressure control unit	Check that the tyre pressure control unit is operating correctly	End of diagnosis	Tyre pressure control unit not operating correctly	Replace the tyre pressure control unit Op. 4450B91 TPMS SYSTEM CONTROL UNIT R R