Workshop Manuals Factory service & repair

Alfa Romeo 147 Factory Service Manual (2000-2002)18 · Fault diagnosis

18 · Diagnostics

X20 Brake fluid leaks

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2002
Section: Consumption / leaks / wear › X20 Brake fluid leaks

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Fault diagnosisX20 Brake fluid leaks

X20 Brake fluid leaks

A brake fluid leak is seen.

Step	Test procedure	Result	Action
0	PRELIMINARY CHECKS Check whether the fault is accompanied by decreased braking efficiency Visually inspect the brake fluid level in the reservoir Op. 3330A12	OK	Move onto step 1
		Decreased braking efficiency	See table F01 POOR BRAKING ACTION End of diagnosis
		Level too low	Restore the correct level and road test the vehicle. If the fault persists, Move onto step 1
1	RESERVOIR LEAKAGE TEST Visually check that there are no leaks from the reservoir and the pipes	OK	Move onto step 2
1		Leaks from the reservoir	Replace the reservoir Op. 3330C30 End of diagnosis
2	PUMP LEAKAGE TEST Visually check that there are no leaks of fluid from the brake pump and connectors	OK	Move onto step 3
		Leaks from the connectors in the area of the pump / ABS control unit	Tighten the connectors or replace the damaged parts End of diagnosis
		Leaks from the connectors in the area of the pump / ABS control unit	Replace the brake servo assembly Op. 3330D02 End of diagnosis
3	CHECK HOSES Visually inspect that there are no leaks from the flexible pipes	OK	Move onto step 4
		Leaks from the connectors or flexible pipe to the front brakes deteriorated	Tighten the connectors or replace the pipe Op. 3330E10 End of diagnosis
		Leaks from the connectors or flexible pipe to front brakes deteriorated	Tighten the connectors or replace the pipe Op. 3330E30 End of diagnosis
4	RIGID PIPES CHECK Visually inspect that there are no leaks from the underbody rigid pipes	OK	Move onto step 5
4		Leaks from the connectors or rigid pipes damaged	Tighten the connectors or replace the rigid pipes End of diagnosis
5	CORRECT OPERATION CHECK Check that the fault is no longer present	OK	Incorrect selection of diagnostic procedure
5		Fault persists	Incorrect selection of diagnostic procedure

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Parts & tools for this job For 2000 Alfa Romeo 147

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