F31 TRACTION CONTROL SYSTEM NOT WORKING - TCS - Alfa - 166 - eLearn

3308631 - F31 TRACTION CONTROL SYSTEM NOT WORKING - TCS

During strong acceleration, the front wheels skid, even with the TCS lamp on the instrument panel flashing.

1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
		Results of the tests
	Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Verify: that there are no faults in the ABS control unit the plausibility of all the parameters	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
		Continue to Step 2	Lack of dialogue with the control unit	Restore the connection between the ABS control unit and diagnostic connector ( See E7020 ABS )
2	ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Using the diagnostic equipment (Examiner or other iinstruments) carry out the active diagnosis of: pump motor solenoid valves	Continue to Step 3	Pump and/or solenoids faulty	Replace electrohydraulic unit-electronic control unit Op. 3340A12
3	CHECK PAD TYPE AND SURFACE	All OK	Problems met	Operation
	Verify: condition of pad friction surfaces pad type	Continue to Step 4	Friction surfaces vitrified or with traces of oil or grease	Clean and eliminate the causes of the problem
	Verify: condition of pad friction surfaces pad type	Continue to Step 4	Front pads damaged or wrong type	Replace front pads Op. 3310A60
4	CHECK DISCS	All OK	Problems met	Operation
	Check the condition of the brake discs	Continue to Step 5	Front discs worn or damaged	Skim or if necessary replace front discs Op. 3310A48
5	CHECKING BRAKE CALIPERS	All OK	Problems met	Operation
	Check that the brake caliper pistons run freely	Continue to Step 6	Front caliper pistons seized	Replace front brake calipers Op. 3310A30
6	CHECK BRAKE PIPES/HOSES AND BLEEDING	All OK	Problems met	Operation
	Visually check that there are no kinks or restrictions in the brake pipes, bleed the system and check that fluid emerges from the bleed screws as normal	Continue to Step 7	There are kinks or restrictions, fluid does not come out normally	Replace the faulty section of pipe
7	HECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'