Note
1. Open the bonnet.
2. Disconnect the negative battery cable.
3. Remove the radiator grille.
4. Disconnect the bonnet switch connector.
5. Check the continuity between the bonnet switch terminals A and B using an ohmmeter.

6. Lock the bonnet lock using a flat-head screwdriver or equivalent as shown.

7. Check the no continuity between the bonnet switch terminals A and B using an ohmmeter.
Caution
Theft-deterrent control module removal/installationMazda 6 Service Manual: Inboard combination light removal/installation
1. Disconnect the negative battery cable.
2. Remove the trunk lid trim (liftgate lower trim). (See TRUNK LID TRIM
REMOVAL/INSTALLATION) (See LIFTGATE LOWER TRIM REMOVAL/INSTALLATION)
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
Inboard Combinat ...
Mazda 6 Service Manual: Power brake unit inspection
Warning
The following inspection methods are the simple inspection methods
to judge the function of power brake.
If there is malfunction in power brake unit, replace the power
brake unit as a component.
Power Brake Unit Function Check (Simple Method)
Step 1
1. With the engine stoppe ...