8.2.6.2 

Air-conditioning 

System 

Circuit

Schematic

I/P Fuse Block

Compressor 
Relay

Compressor Clutch

Main Relay

Outside 
Temperature 
Sensor

Inside 
Temperature 
Sensor

Ambient 
and 
Sunlight 
Sensor

A/C Control Module

To BCM

Engine Control Module

A/C Pressure Switch

To Background 
Light Switch

To Instrument Cluster

To Datalink Connector

To BCM

FE08-5103b

Heating, Ventilation and A/C System

Automatic Air-conditioning

8-19

26

I/P Fuse Block

Blower 
Relay

Inside and 
Outside 
Circulation 
Motor

Blower

Blower Speed Motor

A/C Control Module

Evaporator 
Temperature 
Sensor

Heater Core 
Temperature 
Sensor

Hot and Cold Air Adjust Motor

Air Direction 
Adjust Motor

FE08-5104b

8-20

Automatic Air-conditioning

Heating, Ventilation and A/C System

8.2.7 Diagnostic Information and Procedures
8.2.7.1 Diagnosis Description

Refer to

8.2.2

 

Description and Operation

get familiar with the system functions and operation before start system diagnostics, so that

it will help to determine the correct troubleshooting steps, more importantly, it would also help to determine whether the customer
described the situation is normal.

8.2.7.2 Visual Inspection

–

Check installed aftermarket equipments that may affect the air-conditioning system performance.

–

Check easy to access air-conditioning system components and circuits, to identify whether there is significant damage or potential
fault.

–

Check easy to access air-conditioning system pipelines, to identify whether there is a leakage.

8.2.7.3 Air-conditioning Control Module Terminal List

16
32

15
31

14
30

13
29

12
28

11
27

10
26

9

25

8

24

7

23

6

22

5

21

4

20

3

19

2

18

1

17

A/C Control Module Connector IP40

FE08-5102b

Comments
1. UB IS the battery voltage.
2. If there is no instruction, GND is 0 V or close to 0 V.

Terminal

ID

Terminal Definition

Wire Color

Terminal

Status

Specified Conditions (Voltage,

Current, Waveform)

1

Warm and Cold Motor Feedback

0.3 G/Y

Input

GND-5V DC Signal

Heating, Ventilation and A/C System

Automatic Air-conditioning

8-21

Terminal

ID

Terminal Definition

Wire Color

Terminal

Status

Specified Conditions (Voltage,

Current, Waveform)

2

Sunshine Value

0.3 W/L

Input

GND-5V DC Signal

3

Outside Temperature

0.3 P/L

Input

GND-5V DC Signal

4

Evaporator Temperature

0.3 W/R

Input

GND-5V DC Signal

5

Heater Core Temperature

0.3 Y/L

Input

GND-5V DC Signal

6

Air Mode Motor Feedback

0.3 G/R

Input

GND-5V DC Signal

7

Blower Control

0.5 L/B

Output

GND-5V PWM Signal

8

5V Voltage

0.3 L/W

Output

5V DC Signal

9

Heating and Cooling Motor - Hot

0.5B / P

Output

GND or UB

10

Heating and Cooling Motor - Cold

0.5 B/G

Output

GND or UB

11

Mode Motor - Face Mode

0.5 B/W

Output

GND or UB

12

Mode Motor - Defrost

0.5 B/Y

Output

GND or UB

13

Blower Feedback

0.5 B/R

Input

GND-UB DC Signal

14

Spare 6

-

-

-

15

Inside Temperature

0.3 W/G

Input

GND-5V DC Signal

16

IG1

0.5 R/O

Power

UB

17

Ground

0.3 Br/G

-

GND

18

Spare 5

-

-

-

19

Spare 4

-

-

-

20

IP + B

0.85 R

Power

UB

21

Spare 3

-

-

-

22

Defrost Feedback

0.5 L

Input

GND or UB

23

Lighting Control

0.3 O/G

Input

GND-UB PWM Signal

24

Data Link Connector

0.5 Gr/P

Input / Output

K_BUS

25

Vehicle Speed Signal

0.3 G

Input

Frequency Signal

26

Spare 2

-

-

-

27

Spare 1

-

-

-

28

Defrost ON / OFF

0.3 L

Output

GND or UB

29

Ground

0.85 B

Power

GND

30

Inside Circulation

0.5 W/L

Output

GND or UB

31

Outside Circulation

0.5 Br/L

Output

GND or UB

32

Compressor ON / OFF

0.5 P/W

Output

GND or UB

8-22

Automatic Air-conditioning

Heating, Ventilation and A/C System