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:
Differential Oil Temperature Sensor
Purpose, Function
The differential oil temperature sensor detects the rear differential oil
temperature based on the resistance of the thermistor, and inputs it to the
AWD CM.
Construction
The differential oil temperature sensor is installed in the rear differential
carr ...
Rear Body Control Module (Rbcm) Removal/Installation
CAUTION:
If configuration is not performed when the rear body control module (RBCM)
is replaced with a new one, the vehicle specification information is not stored
in the rear body control module (RBCM) and the system will not operate normally.
When performing configuration, it ...
Hydraulic Variable Valve Timing Actuator Inspection
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
CAUTION:
Do not disassemble the hydraulic variable valve timing actuator because it
is a precision unit.
1. Disconnect the negative battery cable..
2. Rem ...