In turning on IG and selecting mode switch, sequential operation begins in order of Vent → Bi-level → Blower → Mix. DIP
mode works regardless of order at selecting it. In selecting Vent mode as mode switch, GND(0V) is supplied for FATC
connector A-14(Vent) terminal. Voltage of 9V and more is set in the rest terminal A-15(DEF) and motor drive IG in mode
actuator which receives the signal, works in direction of vent mode setup. Vent, Built-in-level, Blower, Mix and Defrost
mode can be selected in themethod described above.
ERROR DIAGNOSTICS
Symptoms Causes How to check
Specific mode isn't selected. Signal transmission error of selected
mode
Measure voltage of selected mode wiring
without separating connector linked with
actuator. If 8V and more, check the inside of
controller.
Mode actuator running error If 1V and less at measuring in the above
method, check mode actuator and wiring
state.
Mode selection is impossible Internal error of mode actuator If motor driver IG built in mode actuator is
bad, mode selection is impossible. When
mode isn't selected though GND(0V) is
supplied for selected mode wiring after
selecting mode in controller, its cause is
internal failureof mode actuator.
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