Mazda Training manual - part 291

AIR CONDITIONING 
SG02 - Control System [Manual Air Conditioning]

 

 

SG02-15

TC070-15-01H

 
A/C Compressor Control 
 
The climate control unit sends an A/C signal to the PCM via the main fuse block and 
instrument cluster (PJB and instrument cluster) based on signals sent from the A/C 
switch, fan switch and evaporator temperature sensor. 
The PCM controls the A/C relay and IAC valve based on the input signal from the 
climate control unit and refrigerant pressure switch. 
 

 

 
 
 

AIR CONDITIONING 
SG02 - Control System [Manual Air Conditioning]

 

 

SG02-16

TC070-15-01H

 
Climate control unit inspection (Reference) 
 
1. Turn the ignition switch to the ON position. 
2. Connect the negative (-) lead of the tester to body ground. 
3. By inserting the positive (+) lead of the tester into each climate control unit terminal, 

measure the voltage according to the terminal voltage table. 

 
 

 

 

 

 

AIR CONDITIONING 
SG02 - Control System [Manual Air Conditioning]

 

 

SG02-17

TC070-15-01H

(Cont’d) 

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

AIR CONDITIONING 
SG02 - Control System [Manual Air Conditioning]

 

 

SG02-18

TC070-15-01H

 
Technical Data