OPERATION
(1)
|
Air flow
control dial
|
(3)
|
A/C
switch
|
(5)
|
Temperature
control dial
|
(2)
|
Rear window
defogger switch
|
(4)
|
FRESH/RECIRC
switch
|
(6)
|
Fan speed
control dial
|
SELECT CONTROL PANEL TO SELF-DIAGNOSIS MODE.
Turn the fan speed control dial to OFF position.
Start the engine and press the A/C switch for
at least 5 seconds. The A/C switch must be pressed within
10 seconds after starting engine.
Does the
self-diagnosis mode operate?
CHECK LED ILLUMINATION.
Make sure that all switch LED blink on control panel.
Do all LED illuminate or blink?
Check the switch LED.
CHECK SENSORS MALFUNCTION.
Turn the fan speed control dial to AUTO position.
If the system has trouble for each sensor, rear window
defogger switch LED is turned off.
If the system has no trouble, rear window defogger
switch LED is illuminated.
Does the rear
window defogger switch LED illuminate?
CONFIRM MALFUNCTIONING SENSOR.
Turn the fan speed control dial to 1 — 6th position.
Turn the air flow control dial to each mode position,
check each switch LED illumination according to sensor check table.
Do FRESH/RECIRC and A/C switch LED illuminate
when turning the dial to each mode position?
Repair the malfunctioning sensor.
CHECK MODE DOOR POSITION SIGNAL.
Turn the fan speed control dial to 7 — 12th position.
If the system has trouble for mode door position signal,
rear window defogger switch LED is turned off.
If the system has no trouble, rear window defogger
switch LED is illuminated.
Does the rear
window defogger switch LED illuminate?
Check the mode door actuator circuit.
CHECK BLOWER FAN OPERATION.
Turn the fan speed control dial to 13 — 18th position.
Turn the temperature control dial, check that blower
fan speed changes depending on set temperature.
Does the blower fan speed change?
Check the blower motor circuit.
CHECK OPERATION OF EACH ACTUATOR, BLOWER FAN AND COMPRESSOR CLUTCH.
Turn the fan speed control dial to 19 — 25th position.
Select the operating mode by turning air flow control
dial.
Check the operation of each mode according to operating
mode table.
Does the operation of each mode match to operating mode table?
Push the A/C switch or
turn the ignition switch to OFF, and finish the self-diagnosis.
Repair the malfunction part according
to each diagnostics chart.
|
Note
|
|
When the sunload sensor is checked
indoors or in the shade, open circuit might be indicated. Always
check the sunload sensor at a place where sun shines directly on
it.
|
|
Air
flow control dial position
|
Checked
sensor
|
No
trouble
|
Short
circuit
|
Open
circuit
|
VENT
|
Ambient
sensor
|
A/C
switch LED and FRESH/RECIRC switch LED illuminate
|
A/C
switch LED illuminate
|
FRESH/RECIRC switch
LED illuminate
|
BI-LEVEL
|
In-vehicle
sensor
|
A/C
switch LED and FRESH/RECIRC switch LED illuminate
|
A/C
switch LED illuminate
|
FRESH/RECIRC switch
LED illuminate
|
HEAT
|
Evaporator
sensor
|
A/C
switch LED and FRESH/RECIRC switch LED illuminate
|
A/C
switch LED illuminate
|
FRESH/RECIRC switch
LED illuminate
|
DEF/HEAT
|
Sunload
sensor
|
A/C
switch LED and FRESH/RECIRC switch LED illuminate
|
A/C
switch LED illuminate
|
FRESH/RECIRC switch
LED illuminate
|
DEF
|
Air
mix door motor (Potentio balance resistor)
|
A/C
switch LED and FRESH/RECIRC switch LED illuminate
|
A/C switch LED illuminate
|
|
Operation
|
Air flow control dial position
|
|
VENT
|
BI-LEVEL
|
HEAT
|
DEF/HEAT
|
DEF
|
Air
outlet
|
VENT
|
BI-LEVEL
|
HEAT
|
DEF/HEAT
|
DEF
|
Air
inlet
|
RECIRC
|
RECIRC
|
RECIRC
|
FRESH
|
FRESH
|
Air
mix door
|
FULL
COOL
|
FULL
COOL
|
FULL
HOT
|
FULL
HOT
|
FULL
COOL
|
Blower
fan
|
5V
|
5V
|
8V
|
10V
|
Power
supply voltage
|
A/C
compressor
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
