Mazda CX-5 Service & Repair Manual: Climate Control Unit Inspection [Manual Air Conditioner]
1. Remove the climate control unit with the connector connected..
2. Switch the ignition ON (engine off or on).
3. Connect the negative (-) lead of the tester to the body ground.
4. 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 normal, replace the climate control unit.
Terminal Voltage Table (Reference)
|
Terminal |
Signal name |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item(s) |
|
A |
TNS signal |
Front body control module (FBCM) |
TNS OFF |
1.0 or less |
|
|
TNS ON |
B+ |
||||
|
B |
Illumination (-) |
Instrument cluster |
Headlight ON and panel light control MAX |
2.0 |
|
|
Headlight ON and panel light control MIN |
9.65 |
||||
|
C |
Motor operation |
Air intake actuator |
Switched to RECIRCULATE |
B+ |
|
|
Switched to FRESH |
1.0 or less |
||||
|
D |
Ground |
Body ground |
Under any condition |
1.0 or less |
|
|
E |
Motor operation |
Air intake actuator |
Switched to RECIRCULATE |
1.0 or less |
|
|
Switched to FRESH |
B+ |
||||
|
F |
Sensor GND |
Evaporator temperature sensor |
Under any condition |
1.0 or less |
|
|
G |
Blower fan ON/OFF signal |
Fan switch |
Fan stopped |
B+ |
|
|
Fan on |
1.0 or less |
||||
|
H |
Evaporator temperature sensor input |
Evaporator temperature sensor |
Compared with temperature detected by evaporator temperature sensor |
Refer to graph 1 |
|
|
I |
Blower fan position signal |
Fan switch |
3rd, 4th |
1.0 or less |
|
|
off, 1st, 2nd |
B+ |
||||
|
J |
B+ |
ROOM 15 A fuse |
Under any condition |
B+ |
|
|
K |
LIN |
Front body control module (FBCM) |
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. |
|
|
|
L |
IG2 |
Front body control module (FBCM) |
Switch the ignition to ON |
B+ |
|
|
Switch the ignition off |
1.0 or less |
||||
Climate Control Unit Inspection [Full Auto Air Conditioner]
1. Remove the climate control unit with the connector connected..
2. Switch the ignition ON (engine off or on).
3. Connect the negative (-) lead of the tester to body ground.
4. By inserting the ...
Climate Control Unit Removal/Installation [Full Auto Air Conditioner]
NOTE:
The climate control unit prior to replacement stores the vehicle specification
information.
The new climate control unit does not store any vehicle specification information.
...
Other materials:
Tire Maintenance
Improper or inadequate vehicle maintenance can cause tires to wear abnormally.
Here are some important maintenance points:
Tire Inflation Pressure
Inspect all tire pressure monthly (including the spare) when the tires are cold.
Maintain recommended pressures for the best ride, top handling, an ...
Condenser
Purpose
The condenser cools the high-temperature, highly pressurized refrigerant.
Function
The condenser cools the high-temperature, highly pressurized gaseous refrigerant
compressed by the A/C compressor using the outside air, and changes it to liquid
refrigerant.
Co ...
Rear Seat Center Armrest Removal/Installation
1. Operate the push knob (RH) and lower the rear seat back (RH).
2. Remove screw A.
3. Remove the rear seat center armrest hinge cover (RH) in the direction of the
arrow (1) shown in the figure while setting hook A aside.
4. Remove bolt B.
5. Remove the rear seat center armrest in ...
