1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector located as shown in the figure.
2. Perform KOEO/KOER self-test.
Mazda 6 Service Manual: A/c unit removal/installation
1. Disconnect the negative battery cable.
2. Discharge the refrigerant from the system. (See RECOVERY.) (See CHARGING.)
3. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT.)
4. Remove the dashboard. (See DASHBOARD REMOVAL/INSTALLATION.)
5. Remove the theft-deterrent control module. (See ...
Mazda 6 Service Manual: Control system
L.H.D.
R.H.D.
...