1. Disconnect the negative battery cable.
2. Remove the headlight cleaner switch. (See HEADLIGHT CLEANER SWITCH REMOVAL/INSTALLATION)
3. Inspect for continuity between the headlight cleaner switch terminals using an ohmmeter.


Headlight cleaner switch removal/installationMazda 6 Service Manual: Specifications
Engine
Electrical System
*1 Q-85 is designed for i-ELOOP system. Only Q-85 should be used to ensure correct
operation of i-ELOOP system. Consult an Authorized Mazda Dealer for details.
*2 Not for i-ELOOP system.
*3 This spark plug provides the SKYACTIV-G engine with optimum performance. Co ...
Mazda 6 Service Manual: Cruise Control Function
While this function is operating, the headway control operation is canceled and
only the cruise control function operates.
The vehicle speed can be set more than about 25 km/h (16 mph).
Use the cruise control function on expressways and other highways which do not
require a lot of repeated acc ...