12 · Diagnostics

H02 Drift when braking

DiagnosisH02 Drift when braking · page 1 of 2

When braking, the car tends to move rightwards and/or leftwards.

If the fault occurs also without braking, see table H01.

If required, run a road test on a straight, flat road without transversal slopes.

Check the actual deviation of trajectory by braking and loosening - with extreme caution - the hold on the steering wheel.

Preliminarily check:

Step	Validity	Operation to be performed	Test results
Step	Validity	Operation to be performed	OK	⚠	🔧
1		CHECK BRAKE CIRCUIT Check brake circuit intactness	All OK Go to Step 2	Problems found Leakages or damaged components in the circuit	Intervention Replace the components or replace the brake booster unit PROCEDURE 3330D
		CHECK BRAKE CIRCUIT Check brake circuit intactness
	2		CHECK PAD TYPE AND SURFACE Check: - intactness of pad braking surface (front brakes) - type of pads (front brakes) - intactness of caliper braking surface (rear brakes)	All OK Go to Step 3	Problems found Braking surfaces vitrified or with traces of grease, oil, water	Intervention Clean, check and eliminate the causes of the fault. If required, replace the pads PROCEDURE OP. 3310A60 (front) or the calipers 3320B10 (rear)
				Pads/calipers not of prescribed type	Replace the pads PROCEDURE OP. 3310A60 (front) or the calipers 3320B10 (rear)

3			CHECK DISKS/DRUMS Check: - brake disk intactness - disk type - brake drum intactness - drum type	All OK Go to Step 4	Problems found Disks/drums worn or damaged	Intervention Grind the disks PROCEDURE OP. 3310A54 (front) or mill the drums PROCEDURE OP. 3320B38, and, if required, replace them PROCEDURE OP. 3310A50 (front) or 3320B34 (rear)
				Disk/drum of different type or size	Replace the disks PROCEDURE OP. 3310A50 (front) or the drums 3320B34 (rear)

(Cont..)

Parts & tools for this job For 1998 Fiat Seicento

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.