18 · Diagnostics

O31 Seat belts locked

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2002
Section: Seats › O31 Seat belts locked

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Fault diagnosisO31 Seat belts locked

O31 Seat belts locked

With the belt fastened and the vehicle stationary, when making gentle movements (for example, picking up an object) the seat belt locks easily and/or remains locked

Step	Test procedure	Result	Action
1	REEL CHECK Check that the reel is fitted correctly, checking that the reference pin is correctly positioned in the bodyshell housing	OK	Move onto step 2
1		Fitting irregular	Loosen the fixing bolt and position the reference lug correctly Retighten the bolt to the recommended torque End of diagnosis
2	CHECK FOR PRESENCE OF FOREIGN BODIES Check that there are no foreign bodies inside the system	OK	Move onto step 3
2		Presence of foreign bodies	Remove foreign bodies End of diagnosis
3	BELT CHECK Check that there is no interference, deformation or marks caused by accidents	OK	Move onto step 4
		There is interference which slows down the sliding of the front belts	Eliminate the interference, if necessary, replace the belts Op. 7065A12 End of diagnosis
		There is interference which slows down the sliding of the rear belts	Eliminate the interference, if necessary, replace the belts Op. 7065B10 End of diagnosis
		Presence of distortions on the front mounting rod	Replace the front rod Op. 7065A14 End of diagnosis
		Presence of distortion on the rear mounting rod	Replace the rear rod Op. 7065B14 End of diagnosis
		Presence of distortion on the front reel/pretensioner	Replace the front belt Op. 7065A12 End of diagnosis
		Presence of distortion on the rear reel	Replace the rear belt Op. 7065B10 End of diagnosis
4	PRETENSIONER OPERATION CHECK Check that the pretensioner has not been activated as a result of an accident. If this is the case there would be white powder on the spring casing, the reel would locked and/or the belt deteriorated	OK	Move onto step 5
4		Evidence of pretensioner activated	Replace the belt Op. 7065A12 End of diagnosis
5	REEL RELEASE SYSTEM CHECK Check the reel release, rewinding the belt for a brief section and gently unwinding it	OK	Move onto step 6
		Front reel release system faulty	Replace the front belt Op. 7065A12 End of diagnosis
		Rear reel release system faulty	Replace the rear belt Op. 7065B10 End of diagnosis
6	CHECK ON CORRECT OPERATION Check that the fault is no longer present	OK	Incorrect selection of diagnostic procedure
6		Fault persists	Incorrect selection of diagnostic procedure

‹ Prev O30 The seat belt does not attach to the buckle Next › O32 Seat belt does not lock

Parts & tools for this job For 2000 Alfa Romeo 147

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