Mazda 6 Service Manual: No.2 any of the following lights stay on: (abs warning light, brake system warning light, dsc indicator light and/or tcs-off light)
Diagnostic procedure
No.1 any of the following lights do not illuminate with ignition switch on:
(abs warning light, brake system warning light, dsc indicator light and/or
tcs-off light)
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
Diagnostic procedure
...
Other materials:
Mazda 6 Service Manual: Variable tumble control solenoid valve inspection
1. Remove the variable tumble control solenoid valve. (See INTAKE-AIR SYSTEM
REMOVAL/INSTALLATION.)
2. Inspect airflow between the ports under the following conditions.
If not as specified, replace the variable tumble control solenoid valve.
If as specified, carry out the Circuit Open/Short ...
Mazda 6 Service Manual: No.4 air intake mode does not change
When performing an asterisked (*) troubleshooting inspection, shake the
wiring harness and connectors while performing the inspection to discover
whether poor contact points are the cause of any intermittent malfunctions.
If there is a problem, check to make sure connectors, terminal ...