
Diagnostic procedure

No.3 there is a malfunction in the system even though abs warning light,
brake system warning light, dsc indicator light and tcs-off light do not
illuminate
No.5 dsc*2 operates frequently/dsc does not work correctly*2: dsc indicator
light goes on and off while dsc operatesMazda 6 Service Manual: Location index
INTAKE-AIR SYSTEM
FUEL SYSTEM
Engine Room Side
Fuel tank side
EMISSION SYSTEM
Engine room side
CONTROL SYSTEM
...
Mazda 6 Service Manual: Cruise control switch inspection
1. Disconnect the negative battery cable.
2. Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE
REMOVAL/INSTALLATION.)
3. Disconnect the cruise control switch connector.
4. Inspect for resistance and continuity between the cruise control switch
terminals using an ohmmeter. ...