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:
1. Driver-side front scuff plate (See FRONT SCUFF PLATE REMOVAL/INSTALLATION .)
2. Driver-side front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
3. Hood release lever (See HOOD RELEASE LEVER AND RELEASE CABLE REMOVAL/INSTALLATION .)
4. Fuel-filler lid opener lever (See FUEL-FILLER LID OPENER AND LEVER REMOVAL/INSTALLATION .)
5. Driver-side lower panel (See DRIVER-SIDE LOWER PANEL REMOVAL/INSTALLATION .)
6. Center console tray (See CENTER CONSOLE TRAY REMOVAL/INSTALLATION .)
7. Shift bezel (See SHIFT BEZEL REMOVAL/INSTALLATION .)
8. Upper panel (See UPPER PANEL REMOVAL/INSTALLATION .)
9. Selector lever knob (See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION .)
10. Shift panel (See SHIFT PANEL REMOVAL/INSTALLATION .)
11. Console side panel (See CONSOLE SIDE PANEL REMOVAL/INSTALLATION .)
12. Front console box (See FRONT CONSOLE BOX REMOVAL/INSTALLATION .)
13. CD player (See CD PLAYER REMOVAL .) (See CD PLAYER INSTALLATION .)
14. Front console (See FRONT CONSOLE REMOVAL/INSTALLATION .)
15. Side wall (See SIDE WALL REMOVAL/INSTALLATION .)
16. Rear console (See REAR CONSOLE REMOVAL/INSTALLATION .)
17. Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .)
18. Center panel (See CENTER PANEL REMOVAL/INSTALLATION .)
19. 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) .)
    
    Fig 1: Identifying Climate Control Unit Connector Terminals
    Courtesy of MAZDA MOTORS CORP.