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 according to 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.