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:
Fresh Air Duct
Purpose, Function
Conducts fresh air from outside the engine compartment.
Increases air density by taking fresh air, which is cooler than the engine
compartment, to enhance the charging efficiency, ensuring the combustion stability.
Construction
The fresh-air duct is i ...
Tie Rod End Inspection
1. Inspect the tie-rod end for damage and the boot for cracks.
If there is any malfunction, replace the tie-rod end.
2. Inspect for excessive play.
If there is any malfunction, replace the tie-rod end.
3. Rotate the tie-rod end five times.
4. Install two nuts to the ba ...
Air Bag System Service Warnings [Standard Deployment Control System]
Air Bag Module Inspection
Inspecting an air bag module using a tester can operate (deploy) the air
bag module, which may cause serious injury. Do not use a tester to inspect an
air bag module. Always use the on-board diagnostic function to diagnose the
air bag module for malfunctions ...
