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Home >> Saab >> 2003 >> 9-3 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Theft Protection - 9-3 (9400)) >> Technical Description >> Brief description, anti-theft alarm >> Bonnet switch

Bonnet switch

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

The bonnet switch is placed at the rear left of the engine bay. The switch is supplied with a pulse width-modulated (approx. 3.5%) voltage via a 1 k/ohm pull-up in TWICE. When the bonnet is opened, the switch is closed and the control module input is grounded.

TWICE uses the bonnet switch to trip the anti-theft alarm if the bonnet is opened when the alarm is armed.

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