Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Mazda CX-3 AWDFACTORY OEM SERVICE PROCEDURE
Climate Control Unit Inspection (Auto A/C): Notes
WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
- Remove the following parts:
- Driver-side front scuff plate (See FRONT SCUFF PLATE REMOVAL/INSTALLATION .)
- Driver-side front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
- Hood release lever (See HOOD RELEASE LEVER AND RELEASE CABLE REMOVAL/INSTALLATION .)
- Fuel-filler lid opener lever (See FUEL-FILLER LID OPENER AND LEVER REMOVAL/INSTALLATION .)
- Driver-side lower panel (See DRIVER-SIDE LOWER PANEL REMOVAL/INSTALLATION .)
- Center console tray (See CENTER CONSOLE TRAY REMOVAL/INSTALLATION .)
- Shift bezel (See SHIFT BEZEL REMOVAL/INSTALLATION .)
- Upper panel (See UPPER PANEL REMOVAL/INSTALLATION .)
- Selector lever knob (See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION .)
- Shift panel (See SHIFT PANEL REMOVAL/INSTALLATION .)
- Console side panel (See CONSOLE SIDE PANEL REMOVAL/INSTALLATION .)
- Front console box (See FRONT CONSOLE BOX REMOVAL/INSTALLATION .)
- CD player (See CD PLAYER REMOVAL .) (See CD PLAYER INSTALLATION .)
- Front console (See FRONT CONSOLE REMOVAL/INSTALLATION .)
- Side wall (See SIDE WALL REMOVAL/INSTALLATION .)
- Rear console (See REAR CONSOLE REMOVAL/INSTALLATION .)
- Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .)
- Center panel (See CENTER PANEL REMOVAL/INSTALLATION .)
- Center lower panel (See CENTER LOWER PANEL REMOVAL/INSTALLATION .)
- Remove the climate control unit with the connector connected. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION (AUTO A/C) .)
- Connect the negative battery cable.
- Switch the ignition ON (engine off or on).
- Connect the negative (-) lead of the tester to body ground.
- Insert the positive (+) lead of the tester into each climate control unit terminal and measure the voltage according to the terminal voltage chart.
- If there is any malfunction, inspect the parts under "Inspection item (s)".
- If the parts under "Inspection item (s)" are found to be normal (except for terminal Q), replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION (AUTO A/C) .)
- For terminal Q, first try replacing the blower fan controller. (See BLOWER FAN CONTROLLER REMOVAL/INSTALLATION
.)
If there is still malfunction, replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION (AUTO A/C) .)
- If there is any malfunction, inspect the parts under "Inspection item (s)".
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.