Faulty Signal - Intermittent Fault

Checking Component







- Ignition off.
- Disconnect connector from seat belt tensioner
- Ignition on.

Connect oscilloscope between seat belt tensioner #1 and ground. Measure for an intermittent short-circuit to ground Checking Wiring and Terminals - Intermittent Faults

The oscilloscope should now display a spiked pulse with an interval of approximately 500 ms.

If the value deviates it indicates that the cable is short- circuited. Replace the cable harness.