SSANGYONG Rexton Y200 Manual page 1389

7D-12 AUTOMATIC CONTROL HVAC SYSTEM
Power Transistor
Power transistor controls the blower airflow and it
receives the airflow control signal from the AUTO
temperature control in order to for blower motor to shift
the speed without step by adding the current to the
power transistor basic current.
Inspection
When the power transistor error displays, check the
followings.
1. Turn the ignition ON.
2. Measure the voltage between blower connectors by
changing the step from 1st to 6th.
3. The voltage value by each step is the followings;
(specified value; 0.5)
4. If the value is outside the specified value, check
the open or short circuit.
1st 2nd 3rd
4.5 V 6.0 V 7.5 V
5. When there is no problem in the wiring harness,
replace the power transistor.
4th 5th 6th
9.0 V 11.0 V Relay Hi
SSANGYONG Y200