Anti-slip function not working - asr

Make: Fiat
Model: 500 Factory Service Manual
Year: 2007–2024
Section: Brakes › Anti-slip function not working - asr

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Fault diagnosisAnti-slip function not working - asr

ANTI-SLIP FUNCTION NOT WORKING - ASR

1.2 8v, 1.3 Multijet, 1.4 16v

The front wheels slip with sudden acceleration, even with the ASR warning light flashing in the panel

1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
		Test results
	Connect the Examiner Plus or Smart diagnostic equipment to the diagnostic connector: - check that there are no faults in the ABS control unit; - check the plausibility of all the parameters	Move on to Step 2	1. Presence of errors in the control unit. 2. No communication with the control unit	1. Proceed as instructed by the diagnostic equipment 2. Restore the connection between the ABS control unit and the diagnostic connector See E7020 ABS
2	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Keeping the diagnostic equipment connected, carry out the active diagnosis of: - pump motor; - solenoids	Move on to Step 3	Pump and/or solenoids faulty	Replace the ABS electronic control unit electrohydraulic unit Op. 3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT - R.R.
3	FRONT PAD TYPE AND SURFACE CHECK	All OK	Problems encountered	Operation
	Check: - the condition of the pad brake surfaces; - type of pads	Move on to Step 4	1. Brake surfaces vitrified or show traces of oil or grease 2. Front pads damaged or not the correct type	1. Clean again and remove the causes of the fault 2. Replace the front pads Op. 3310A60 FRONT BRAKE PADS - REPLACE
4	FRONT DISCS CHECK	All OK	Problems encountered	Operation
	Check the condition of the front brake discs	Move on to Step 5	Front discs worn or damaged	Replace the front discs Op. 3310A48 FRONT BRAKE DISC (ONE), LEFT OR RIGHT - R.R
5	FRONT BRAKE CALLIPER CHECK	All OK	Problems encountered	Operation
	Check the sliding of the front brake calliper control pistons	Move on to Step 6	Front calliper pistons seized	Replace the front brake callipers Op. 3310A30 FRONT BRAKE CALIPER (ONE) - R.R
6	PIPE / HOSE AND BRAKE BLEEDING CHECK	All OK	Problems encountered	Operation
	Visually inspect that there are no bends or constrictions in the brake pipes, bleed the system and check that the fluid comes out evenly from the bleed screws	End of diagnosis	Bends or constrictions present, the fluid does not come out evenly	Replace the section of pipe affected by the problem

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Parts & tools for this job For 2007 Fiat 500

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