Note
1. Drive the vehicle at 30 km/h {19 mph} or more.
2. Press on the cruise control main switch (1).

3. Operate each of the cruise control switches.
4. Stop the vehicle and let it idle.
5. Turn and hold the RESUME/ACCEL switch on for at least 3 seconds (2).
The cruise set indicator light will illuminate for 3 seconds,
and then go off for at least 2 seconds.
Thus, the condition detection mode begins.
6. The condition detection mode is canceled by turning the ignition switch to LOCK position or turning off the cruise control main switch.
Condition Code List

Note
Inspection of Diagnostic Trouble Codes
Foreword
Dtc 37
Dtc 01Mazda 6 Service Manual: High-mount brake light removal/installation
4SD
In-vehicle-type
1. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
Rear spoiler type
1. Disconnect the negative battery cable.
2. Remove the rear spoiler. (See REAR SPOILER REMOVAL/INSTALLATION)
3. Remo ...
Mazda 6 Service Manual: Pcv valve inspection
1. Disconnect the negative battery cable.
2. Remove the intake maniforld.(see INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
3. Remove the PCV valve.
4. Blow through the valve and verify that air flows as specified.
If not as specified, replace the PCV valve.
Specification
...