SSANGYONG RODIUS 2004.09 Manual page 143

I. POWER TRANSISTOR
The power transistor controls the fan speed. It controls the blower motor operating speed
without stages by changing the current value to the base of power transistor when receiving
the fan control signal from FATC
▶Inspection
If the power transistor defect code (DTC 6) is appeared, check as below.
- Turn the ignition switch to ON position.
- Measure the voltage between terminals while changing the fan speed from stage 1 to
stage 6.
- The specified voltage value in each stage:
- If the voltage is out of specified value, check the circuit for open. If the circuit is in
normal condition, replace the power transistor.
J. MODE DOOR ACTUATOR
The mode door actuator is an actuator that closes, opens and adjusts the mode door for
VENT, FLOOR and DEF mode to change the air flow directions according to FATC
controller. Under the FATC controller AUTO mode, it stays on DEF mode until the engine
coolant temperature reaches at normal operating level and the mode is changed as below
when the MODE switch is pressed.
▶Inspection
If the intake door mode on FATC is different from the actual intake door mode, check as
below.
- Turn the ignition switch to ON position.
- Measure the voltage between each terminal (P1 through P5)and positive (+) terminal
in respective mode. (If the voltage is changed from 0 V to 12 V after selecting the
mode, it is normal.)
- If the voltage value is out of the specified value, check the related circuits for open.
- If the circuits are in normal condition, replace the FATC.
- If the voltage is within the specified value, replace the mode door actuator assembly.
- Connect the positive (+) and negative (-) cables of temporary power supply to the
door mode actuator. And, connect the negative cable to each terminal (P1 through
P5) to check its operation. (If it operates as shown in above figure, it is normal.)
0-99
6810-30
CIRCUIT
RODIUS 2004.09