Climate Control Unit Inspection [Manual Air Conditioner]: Notes

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
Remove the following parts:
1. Glove compartment (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .)
2. Decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION .)
3. Upper panel (See UPPER PANEL REMOVAL .) (See UPPER PANEL INSTALLATION .)
4. Rear console (See REAR CONSOLE REMOVAL/INSTALLATION .)
5. Shift lever knob (MTX) (See MANUAL TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION [C66M-R] .)
6. Selector lever knob (ATX) (See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION .)
7. Shift panel (See SHIFT PANEL REMOVAL/INSTALLATION .)
8. Front console box (See FRONT CONSOLE BOX REMOVAL/INSTALLATION .)
9. CD player (with CD player) (See CD PLAYER REMOVAL ) (See CD PLAYER INSTALLATION .)
10. Side wall (See SIDE WALL REMOVAL/INSTALLATION .)
11. Front console (See FRONT CONSOLE REMOVAL/INSTALLATION .)
Remove the climate control unit with the connector connected. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] .)
Switch the ignition ON (engine off or on).
Connect the negative (-) lead of the tester to the body ground.
By inserting the positive (+) lead of the tester into the climate control unit connector, measure the voltage according to the terminal voltage table.
- 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 I), replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] .)
  - For terminal I, first try replacing the blower fan controller. If there is still any malfunction, replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] .)
    
    Fig 1: Climate Control Unit With Connector Terminals
    Courtesy of MAZDA MOTORS CORP.