Seat Belt Tensioner: Testing and Inspection
Checking To See If The Seat Belt Tensioner Is Deployed Or NotChecking belt movement
NOTE: There are two methods of checking whether seat belt tensioners have deployed or not. If in any doubt after carrying out the 1st method, go on to the 2nd method.
- Pull out and release the seat belt repeatedly.
Pull out the seat belt to its full length.
The belt should roll in and out as usual.
If the belt is rolling normally:
If the belt operates normally, the seat belt tensioner has not deployed.
If the belt is not rolling normally:
Indications that the seat belt tensioner has deployed are:
- the seat belt sticks.
- the seat belt jerks in and out.
- the seat belt does not roll up properly or not at all.
If the seat belt tensioner has deployed. Replace both seat belt tensioners.
NOTE: If in any doubt whether the seat belt tensioner has deployed or not, perform the next operation.
Checking Seat Belt Tensioner Piston Position
- Make a note of radio code if anti-theft coded radio installed.
- Ignition off.
- Disconnect battery negative lead.
- Remove "B" post inner panel. Pull off (attached with clips).
WARNING: The battery must not be connected when checking piston position.
- Stick a wire into the bottom of the seat belt tensioner tube, as illustrated.
Check seat belt tensioner piston position.
Piston in position A:
The seat belt tensioner has deployed.
- Replace both seat belt tensioners.
Piston in position B:
The seat belt tensioner has not deployed.
- Install "B" post inner panel.