X021 PERDITA DA TUBAZIONE DEPRESSIONE SERVOFRENO

			Test results
1	COMPONENT CONCERNED	CHECK BRAKE SERVO VACUUM PIPE CONNECTIONS	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake servo vacuum pipe	Check that the pipe is correctly coupled on booster side and on engine side	Go to Step 2	The brake servo pipe is not connected	Restore the correct pipe connections
2	COMPONENT CONCERNED	CHECK FOR CUTS ON THE BRAKE SERVO VACUUM PIPE	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake servo vacuum pipe	Check for cuts on the brake servo vacuum pipe	Go to Step 3	The pipe is cut	Go to Step 8
3	COMPONENT CONCERNED	CHECK VACUUM PIPE BAND TIGHTENING	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake servo vacuum pipe	Check the correct tightening of the engine side metal band (if provided)	Go to Step 4	The band is loose	Replace the loose band
4	COMPONENT CONCERNED	CHECK RELEASE CLIP ON THE VACUUM PIPE QUICK CONNECTION	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake servo vacuum pipe	Check the presence of the release clip on the quick connector for the vacuum pipe (if provided)	Go to Step 5	Pipe not connected	Replace the brake servo vacuum pipe
5	COMPONENT CONCERNED	CHECK O-RING INSIDE THE VACUUM PIPE QUICK CONNECTOR	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake servo vacuum pipe	Check the presence of the O-ring inside the vacuum pipe quick connector (if provided)	Go to Step 6	The O-ring is missing	Replace the brake servo vacuum pipe
6	COMPONENT CONCERNED	CHECK QUICK CONNECTOR AND BRAKE SERVO VACUUM VALVE	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake servo vacuum pipe	Check the integrity of the quick connector on the brake servo vacuum pipe (if provided) and on the vacuum valve	Go to Step 7	Connection / valve not intact	Replace the brake servo vacuum pipe
7	COMPONENT CONCERNED	BRAKE PEDAL OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake servo vacuum pipe	With engine running, check if the brake pedal is hard to be operated	End of diagnosis	Excess effort while operating the brake pedal	Go to Step 8
8	COMPONENT CONCERNED	CHECK BRAKE SERVO VACUUM PIPE LEAKS	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Brake servo vacuum pipe	Check for any air bubbles, after having disassembled the brake servo vacuum pipe and dipped it water, plugging the engine side interface and blowing air from the valve side	End of diagnosis	Air bubbles coming out	Replace the brake servo vacuum pipe