Self-diagnosis process
The F.A.T.C. module self
test feature will detect electrical malfunction and provide error codes
for system components with suspected failures.

DTC data can be retrieved from the control
panel directly or from the DLC using the Hi-Scan
Pro. |
HOW TO READ SELF-DIAGNOSTIC CODE
1. |
After the display panel flickers three times
every 0.5 second, the corresponding fault code flickers on the setup
temperature display panel every 0.5 second and will show two
figures. |
2. |
Fault code
Fault code
|
Fail
description
|
Control
unit
|
00
|
Normal
|
11
|
In-car
temperature sensor open (High)
|
12
|
In-car
temperature sensor short (Low)
|
13
|
Ambient
temperature sensor open (High)
|
14
|
Ambient
temperature sensor short (Low)
|
15
|
Water
temperature sensor open (High)
|
16
|
Water
temperature sensor short (Low)
|
17
|
Evaporator temperature sensor open
(High)
|
18
|
Evaporator temperature sensor short
(Low)
|
19
|
Temp
door potentiometer open/short
|
20
|
Temp
door motor
|
21
|
Mode
door potentiometer open/short
|
22
|
Mode
door control motor
|
23
|
Humidity
sensor open (High)
|
24
|
Humidity
sensor short
(Low)
|
|
3. |
Fault code display
(1) |
Continuance operation : DTC code is
one

|
(2) |
Continance operation : DTC code is more
two

|
(3) |
Step operation
A. |
Nomal or one fault code is same as
a continuance operation |

| |
4. |
If a fault code is displayed during the DTC
check, Inspect a malfunction cause by referring to the DTC
code. |
5. |
Fail safe
(1) |
In-car temperature sensor: Control with
the value of 25°C(77°F) |
(2) |
Ambient temperature sensor: Control with
the value of 20°C(67°F) |
(3) |
Evaporator temperature sensor: Control
with the value of
-2°C(28.4°F) |
(4) |
Humidity sensor: Control with the value
of 10% |
(5) |
Water temperature sensor : Control with
the value of -2°C (28.4°F) |
(6) |
Temperature control actuator (Air mix
potentiometer):
If temperature setting 17°C-24.5°C, fix
at maximum cooling position.
If temperature setting 25°C-32°C, fix at
maximum heating position. |
(7) |
Mode control actuator (Direction
potentiometer):
Fix vent position, while selecting vent
mode.
Fix defrost position, while selecting
all except vent mode. |
(8) |
AQS sensor : AQS operation
OFF.
A. |
Intake position : The position
before selecting AQS
switch. | | |
1. |
Disconnect the negative (-) battery
terminal. |
2. |
Remove the center facia panel (A) by pulling
it using a screw driver (-) after loosening a screw Take care of
fixing clips.

|
3. |
Disconnect the connectors (B) from the center
facia.

|
4. |
Remove the heater & A/C controller (A)
after loosening 4 screws.

|
5. |
Installation is the reverse order of
removal. |