08 April 2018

Wiring Woes

The Precious is equipped with side airbags which reside in the outward facing side of the seat back.

The wiring for this feature appears to have developed an intermittent open where the wiring leaves the car's harness and enters the seat harness on the driver's side.

The light comes on, the light goes off.  Seemingly at random.

I've found the four wires that it MUST be.  Two for the airbag and two for the seatbelt pre-tensioner.

Now comes the fun of wiggling them in isolation until we find the portion of a wire that consistently causes and cures the open circuit.

Happily, these systems only fire when their two wires are shorted to each other rather than when the circuit is broken.

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