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:
Restraints SST
49 H066 002
Deployment tool
49 B066 004
Adapter harness
49 L066 002
Adapter harness
49 G066 003
Adapter harness
49 N088 0A0
Fuel and Thermometer checker
...
Customer Assistance (U.S.A.)
Your complete and permanent satisfaction is our business. We are here to serve
you. All Authorized Mazda Dealers have the knowledge and the tools to keep your
Mazda vehicle in top condition.
If you have any questions or recommendations for improvement regarding the service
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Electronic Stabilization
Control
Description
Electronic Stabilization Control (ESC) supports
driver safety. It reduces the risk of slipping and
improves driving stability. ESC detects critical situations,
such as if the vehicle is oversteering or
understeering, or if the wheels are spinning.
The brakes are applied or the motor t ...
