Control System - [Full-Auto Air Conditioner]: Diagnosis Mazda CX-5 I

AIR MIX ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER]

Scheme 9

Scheme 10

1. Connect battery positive voltage to air mix actuator terminal C (or B), connect terminal B (or C) to ground, and then verify that the air mix actuator operates as shown in the table. If the operation condition is not normal, replace the air mix actuator. (Scheme 9): Identifying Air Mix Actuator Operation Diagram (Driver-Side) Terminal Air mix actuator operation B C B+ Ground COLD --> HOT Ground B+ HOT --> COLD
2. Verify that the resistance between terminals F and G, E and F matches the air mix actuator operation as shown in the graph. If the operation condition and resistance are not normal, replace the air mix actuator. (Scheme 10): Air Mix Actuator Operation Condition And Resistance Graph (Driver Side)

Scheme 11

Scheme 12

1. Connect battery positive voltage to air mix actuator terminal C (or B), connect terminal B (or C) to ground, and then verify that the air mix actuator operates as shown in the table. If the operation condition is not normal, replace the air mix actuator. (Scheme 11): Identifying Air Mix Actuator Operation Diagram (Pasenger-Side) Terminal Air mix actuator operation B C B+ Ground HOT --> COLD Ground B+ COLD --> HOT
2. Verify that the resistance between terminals F and G, E and F matches the air mix actuator operation as shown in the graph. If the operation condition and resistance are not normal, replace the air mix actuator. (Scheme 12): Air Mix Actuator Operation Condition And Resistance Graph (Pasenger-Side)

Scheme 13

Scheme 14

Scheme 15

1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
2. Remove the following parts: Dashboard under cover (See «DASHBOARD UNDER COVER REMOVAL/INSTALLATION»(ref-615455-S39827127492014051000000) ). Glove compartment (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION»(ref-615455-S15366383852014051000000) ).
3. Disconnect the airflow mode actuator connector.
4. Remove the screw.
5. Remove the airflow mode actuator. (Scheme 13): Identifying Air Flow Mix Actuator, Connectors And Screw
6. Remove the airflow mode main link. (Scheme 14): Identifying Airflow Mode Main Link And Actuator
7. Remove the bracket.
8. Install in the reverse order of removal. (See «AIRFLOW MODE ACTUATOR INSTALLATION NOTE»(ref-615402-S02077219172014051000000) ). (Scheme 15): Identifying Airflow Mode Actuator And Bracket

Scheme 16

Scheme 17

Scheme 18

Scheme 19

1. Align the airflow mode main link and the airflow mode sub link projection as shown in the figure.
2. When lightly pressing the airflow main link to rotate it in the direction of the arrow, verify that the airflow mode door switches to the position for each mode. (Scheme 16): Identifying Airflow Mode Main Link And Tab (Scheme 17): Rotating Airflow Mode Main Link
3. Align the airflow mode main link installation hole with the shape of the airflow mode actuator shaft, and install while holding the airflow mode main link. (Scheme 18): Aligning Airflow Mode Main Link Installation Hole With Airflow Mode Actuator Shaft (Scheme 19): Identifying Airflow Mode Main Link And Actuator With Screws

AIRFLOW MODE ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER]

Scheme 20

Scheme 21

1. Connect battery positive voltage to airflow mode actuator terminal D (or F), connect terminal F (or D) to ground, and then verify that the airflow mode actuator operates as shown in the table. If the operation condition is not normal, replace the airflow mode actuator. (Scheme 20): Airflow Mode Actuator Operation Condition Diagram Terminal Airflow mode actuator operation D F B+ Ground DEFROSTER --> VENT Ground B+ VENT --> DEFROSTER
2. Verify that the resistance between terminals B and C, C and A matches the airflow mode actuator operation as shown in the graph. If the operation condition and resistance are not normal, replace the airflow mode actuator. (Scheme 21): Air Mix Actuator Operation Condition And Resistance Graph

Scheme 22

Scheme 23

1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
2. Remove the dashboard under cover. (See «DASHBOARD UNDER COVER REMOVAL/INSTALLATION»(ref-615455-S39827127492014051000000) ).
3. Disconnect the connector.
4. Remove the screws. (Scheme 22): Locating Blower Motor Connector With Screw
5. Remove the blower motor.
6. Install in the reverse order of removal. (Scheme 23): Locating Blower Motor

Scheme 24

1. Connect battery positive voltage to blower motor terminal B, connect terminal A to ground, and then verify its operation. If there is any malfunction, replace the blower motor. (Scheme 24): Identifying Blower Motor Terminals

POWER METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR (POWER MOS FET) INSPECTION [FULL-AUTO AIR CONDITIONER]

1. Verify that the continuity between the power MOS FET terminals is as indicated in the table. If there is any malfunction, replace the power MOS FET. If the blower motor operation is not normal even though no malfunction can be verified, inspect the climate control unit. (See «CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER]»(ref-615402-S26982110482014051000000) ).

Power MOS FET Circuit Diagram. Scheme 25

Scheme 26

1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
2. Discharge the refrigerant. (See «REFRIGERANT CHARGING»(ref-615479-S35473472702014051000000) ).
3. Remove the front under cover No.2. (See «FRONT UNDER COVER NO.2 REMOVAL/INSTALLATION»(ref-615433-S21444705852014051000000) ).
4. Remove the drive belt. (See «DRIVE BELT REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615399-S40242248072014051000000) ).
5. Remove the A/C compressor. (See «A/C COMPRESSOR REMOVAL/INSTALLATION»(ref-615407-S32851211722014051000000) ).
6. Disassemble in the order indicated in the table. (Scheme 26): View Of Magnetic Clutch Components With Torque Specifications
7. Assemble in the reverse order of disassembly.
8. Adjust the magnetic clutch clearance. (See «MAGNETIC CLUTCH ADJUSTMENT [FULL-AUTO AIR CONDITIONER]»(ref-615402-S07709596972014051000000) ).

Scheme 27

Scheme 28

1. When removing or installing the bolt, lock the A/C compressor pulley against rotation using the following procedure. CAUTION: When connecting the positive battery cable to the magnetic clutch connector, use a cable with a female terminal of the correct size. Otherwise, load will be applied to the terminal, resulting in deformation or damage, and poor contact. In addition, the positive battery cable could disconnect from the connector resulting in a short circuit. Apply battery positive voltage to the magnetic clutch terminal and connect the A/C compressor body to the ground. (Scheme 27): Applying Battery Positive Voltage To Magnetic Clutch Terminal And A/C Compressor Body And Ground Wrap the drive belt, which is no longer of use, tightly around the A/C compressor pulley. Hold the drive belt in place with pliers. Remove/installation the bolt. Tightening torque 10-15 N.m {102-152 kgf.cm, 89-132 in.lbf}
2. When installing a new A/C compressor body, replace the recommended bolt. (Scheme 28): Installing A/C Compressor Body

Scheme 29

1. Remove/install the snap ring using a snap ring pliers. (Scheme 29): Removing/Installing Snap Ring Using Snap Ring Pliers

Scheme 30

1. First, insert the 1mm (0.039 in) thick shim into the shaft. (Scheme 30): Identifying Shim And Shaft

EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER]

Note. Inspect the evaporator temperature sensor when it is installed to the A/C unit.

Scheme 31

1. Set the fan speed at MAX HI.
2. Set the temperature control at MAX COLD.
3. Set the RECIRCULATE mode.
4. Turn the A/C switch off.
5. Close all doors and windows.
6. Wait for 5 min.
7. Disconnect the evaporator temperature sensor connector.
8. Measure the temperature at the blower inlet.
9. Measure the resistance between the evaporator temperature sensor terminals. If the resistance is not as shown in the graph, replace the evaporator temperature sensor. (Scheme 31): Evaporator Temperature Sensor Characteristic Curve

Scheme 32

1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
2. Discharge the refrigerant. (See «REFRIGERANT CHARGING»(ref-615479-S35473472702014051000000) ).
3. Disconnect the refrigerant pressure sensor connector. CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise will occur. Always immediately plug all open fittings after removing any refrigeration cycle parts to keep moisture or foreign material out of the cycle.
4. Loosen the refrigerant pressure sensor using two spanners.
5. Remove the refrigerant pressure sensor. Tightening torque 10-11 N.m {102-112 kgf.cm, 89-97 in.lbf}
6. Install in the reverse order of removal. (See «REFRIGERANT PRESSURE SENSOR INSTALLATION NOTE»(ref-615402-S42124795802014051000000) ).
7. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST»(ref-615479-S38875091672014051000000) ). (Scheme 32): Identifying Evaporator Temperature Sensor With Connector

CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER]

1. Remove the climate control unit with the connector connected. (See «CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER]»(ref-615402-S33501432122014051000000) ).
2. Switch the ignition ON (engine off or on).
3. Connect the negative (-) lead of the tester to body ground.
4. By inserting the positive (+) lead of the tester into each climate control unit terminal, 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 2D), replace the climate control unit. For terminal 2D, first try replacing the power MOS FET. If there is still any malfunction, replace the climate control unit.

Identifying Climate Control Unit Wiring Harness Side Connectors. Scheme 33

Evaporator And Passenger Compartment Temperature Sensor Graph. Scheme 34