Passenger seat belt tensioner fault - electrical connector.

[pauljordanie]

2009 C4GP 1.6HDI.

The wires that connect to the passenger seat belt tensioner (orange plastic connector) have come out of the connector. Now I don't know which way they came out. I have an orange and yellow wire. Does the orange wire go into the connector to the right on the connector (closest to the passenger door) I wonder..??

[GiveMeABreak]

Please post up your VIN and I'll check the wiring diagrams.

[pauljordanie]

VF7**************[VIN obfuscated, can be read by forum staff]. Thanks

[GiveMeABreak]

According to the wiring diagram the Passenger Seat Belt Pretensioner has a 2 pin Blue connector.

Yellow wire number 652 into Pin 1
Orange wire 653 into Pin 2

Make sure you disconnect the battery and wait 10 minutes for the capacitors to discharge before attempting any wiring connections with airbags (risk of deployment & serious injury)

[pauljordanie]

That's great thanks, but which is pin 1 & pin 2. I cant see anything on the plastic plug/socket.

[GiveMeABreak]

There should be a number, but very small within the socket. If you aren’t sure, check the driver’s side socket for comparison

[Peter.N.]

If in doubt, check the other seat.

Peter

[pauljordanie]

Okay I reconnected the wires but I still have the warning light on dash. Is there a way to test the tensioner insitu by measuring resistance or volt drop across the tensioner pins? Not sure if this problem is the actual tensioner or the wiring. Thanks.

[white exec]

Don't apply a test meter (of any type) to the tensioner - it is an explosive device, which exerts considerable force.

[pauljordanie]

Thanks for the heads up. How do you test them then? I was looking at this

and wondered what resistance readings you should get etc.

[white exec]

I believe you can substitute a 2∼3 ohm* resistor for the tensioner, as this is the resistance the triggering circuitry expects to see. If that puts the warning light out, then the tensioner was faulty.
* 2.7R or 3.3R resistance would be nearest standard values.
This avoids putting any voltage directly on the tensioner.

This might need confirming for your vehicle.

[pauljordanie]

I tried a 3R resistor. Light still on. Would I need to reset Airbag ECU via Lexia before the light goes out I wonder?