How to solve VW 2004 Touareg airbag warning light on

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A  Volkswagen Touareg 2004 year with 3.2L V6 engine, with 180 thousand KM, owner said the airbag (SRS) light on.

I connect X431 to read the trouble code, and the fault code is 00592, it show that the right seat belt switch has fault. And the driver said, he used to repair and change the passenger seat belt, but the fault stays. Based on the current fault and the previous diagnostic history, I doubt there are 3 possible reasons:

• Launch X431 is not professional VW diagnostic tool; maybe it had an incorrect diagnosis.
• the new seat belt has poor quality;
• the seat belt harness or airbag control unit has fault.

 

Firstly, judge whether X431 had a fault diagnosis: to unplug the passenger seat belt switch plug and airbag ignition plug, X431 displays the fault is corresponding to the unplugged plug, it means X431 is right. Next is to check the new seat belt, I apply the way that measure the resistance of seat belt switch, the resistance value is infinity when seat belt switch is unplugged, and 0? when seat belt switch is plugged, by this way, I know how the new seat belt works, the measuring result indicates the new safe bel has no quality problem. Then I also use the same way to measure the original seat belt, the resistance value is 400? when seat belt switch is unplugged, and 300? when seat belt switch is plugged, the comparison result tell me the original seat belt switch and the new one have different working principle, although the new seat belt switch quality is not poor, it isn

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Tags: cat Launch Launch X431 original VW VW diagnostic tool X431