SsangYong Actyon Sports II. Manual - part 174

01-14

(7) How to end self-diagnosis

Turn the AUTO switch ON or turn OFF the ignition key.

(8) When A/C system is faulty (Initial auto-diagnosis)

The fault code for the faulty sensor is not displayed. Therefore you should start the self-diagnosis to 

check the system.

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3) Trouble Diagnosis

(1) Duct Temperature Sensor

If the fault code for the duct temperature sensor (DTC 3) appears on the display, check the sensor as 

follows:

Remove the duct temperature sensor and measure the resistance between the terminals of the 
connector (specification: approx. 2.2 kW at 25℃). If the resistance value is extremely high or 

low, replace the duct temperature sensor.

If the result is not as specified, replace the duct temperature sensor. If the result is as specified, 

proceed to the next step.

Turn the ignition switch to ON position and measure the voltage between the connector of the FATC 
controller and the duct temperature sensor (specification: approx. 2 V at 25℃).

If the voltage cannot be measured, check the wiring for open circuit. If the result is as specified, 

replace the FATC controller.

A.

B.

C.

D.

(2) Power Transistor

If the fault code for the power transistor (DTC 6) is displayed, check as follows:

Turn the ignition switch to ON position.

Measure the voltage between the terminals of the blower motor while changing the fan speed from 

the lowest level to the highest level.

The specified voltage value in each stage:

A.

B.

C.

If the voltage is out of specified value, check the wiring for open circuit. If the wiring is intact, replace 

the power transistor.

D.

(3) Thermo AMP Sensor (Intake Air Sensor)

If the A/C is not turned on, check as follows:

Remove the thermo AMP and measure the voltage between the terminals no. 1 and 2 of the 

connector.

Check if the voltage is approx. 12 V when the output is ON and 0 V when the output is OFF.

If the voltage value is not as specified, replace the thermo AMP. If the value is as specified, proceed 

to the next step.

Turn the ignition switch to ON position and turn on the A/C by pressing the A/C button. And measure 

the voltage between the terminals A12 and A11 of the FATC controller connector (specification: 

approx. 12 V). 

If the voltage cannot be measured, check the wiring for open circuit. If the result is not as specified, 

replace the thermo AMP.

A.

B.

C.

D.

E.

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(4) Sun-load sensor

Remove the sun-load sensor and measure the current between the terminals with the sensor 

exposed to direct sunlight.

Measure the current again in the shade. If this value is lower than the measured value in the 

sunlight, the sensor is intact.

Turn the ignition switch to the "ON" position.

Measure the voltage between the terminals of the sun sensor at the FATC connector. (approx. 2.5 V 

under sunlight and approx. 4.8 V under shade)

If the voltage cannot be measured, check the wiring for open circuit. If the result is not as specified, 

replace the FATC controller.

A.

B.

C.

D.

E.

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1. SYSTEM LAYOUT (EXTERIOR)

Receiver drier

A/C compressor

Line and port

Ambient temperature sensor

A/C condenser

Electric fan