Chery T21 2014 Service Manual page 1346

31 - AIR CONDITIONING
b. Automatic A/C
Self-diagnosis operation: press the A/C + inner/outer circulation button for more than 5 seconds.
Malfunction display: Switch DVD to FM mode, set the driver A/C temperature to 29.5°C and long press
the A/C + inner/outer circulation button for more than 5 seconds to enter self-diagnosis mode.
Automatic controller background automatically performs self-checking, runs the A/C system actuators
and sensors, and then shows the malfunction code by DVD screen (other information is not
shown).The system automatically exits self-checking after displaying the code for 5 seconds (power on
can force the diagnosis function to end). If there is no malfunction, it will display 00, and 5 seconds
later, it will exit self-diagnosis mode. System enters the state before diagnosis after exiting 
self-diagnosis mode.
Detail correspondence of codes and malfunction is as follows:
31
Code
No malfunction, system operates
00
properly
Outside temperature sensor
01
malfunction (open or short)
Left room temperature sensor
02
malfunction (open or short)
Right room temperature sensor
03
malfunction (open or short)
Left sun sensor malfunction (open or
04
short)
Right sun sensor malfunction (open
05
or short)
06 Reserve
07 Reserve
Evaporator temperature sensor
08
malfunction (short or open)
Heater core sensor malfunction
09
(short or open)
10 Reserve
Blower malfunction (invalid
11
adjustment)
3. Malfunction Compensation Function
To guarantee the proper work of A/C system, when the controller detects an invalid or defect sensor in A/C
system, the system will work based on the sensor failure alternative value.
Definition of sensor failure alternative value is as follows:
Description
Outside Temperature Sensor
Room Temperature Sensor
Sun Sensor
20
31–
Content
Failure Alternative
Value
25°C
25°C
0 W/m2
Code
Circulation damper motor
12
malfunction (invalid adjustment)
Left mode damper motor malfunction
13
(invalid adjustment)
14 Reserve
Left mix damper motor malfunction
15
(invalid adjustment)
Right mix damper motor malfunction
16
(invalid adjustment)
17 Reserve
18 Reserve
19 Reserve
20 Reserve
Control panel CAN communication
21 malfunction (CAN communication
interrupted)
Communication with BCM
22
malfunction
Description
Heater Sensor
Evaporator Sensor
Vehicle Seed Sensor
Chery Automobile Co., Ltd.
Content
Failure Alternative
Value
85°C
0°C
10 km/h