HVAC System (Heater, Ventilator and A/C)
AUTOMATIC AIR CONDITIONING
AC-59
6. COMPRESSOR CONTROL SYSTEM
In the automatic air-conditioning mode, the A/C relay is activated or deactivated depending on the
TAO (required blow-out air temperature), TAM (ambient temperature) and T INT (suction air tem-
perature) to operate or stop the compressor.
The compressor operation circuit supplies current to the magnet clutch as the ECM activates the
A/C relay by connecting its coil to the ground.
! Control by TAO and TAM (LHD vehicle)
! Control by T INT (LHD vehicle)
A/C relay
B4H1338C
B4H1340A
B4H1341B
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