Check the Resistance of the Detonation Unit

Checking The Resistance Of The Detonation Circuit

Turn the ignition switch to the OFF position.







Unplug the connector:
Seat- belt tensioner, left 236D







- Carefully check the belt tensioner connector for poor contacts, oxidization and pushed-out pins.
- Connect reference resistor 86 12 095 to the 2-pin female connector.







Unplug the connector:
Control module, Airbag 331







- Carefully check the control module connector for poor contacts, oxidization and pushed-out pins.
- Connect BOB to the wiring harness.







Take a resistance reading between
- 8 Control module, Airbag
- 9 Control module, Airbag







- Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

The reading should be 2 - 4 Ohm

Is the function correct?

NO - Rectifying the Lead

YES - Changing the Components