1. Open the bonnet.
2. Disconnect the negative battery cable.
3. Remove the radiator grille.
4. Disconnect the bonnet latch switch connector.
5. Inspect for continuity between the bonnet latch switch terminals A and B using an ohmmeter.
6. Lock the bonnet lock using a flathead screwdriver or equivalent as shown.
7. Inspect for continuity between the bonnet latch switch terminals A and B using an ohmmeter.