2007 NISSAN TIIDA HAC-143

PTC HEATER CONTROL SYSTEM
HAC-143
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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PTC HEATER (300 WATT) : PTC Heater Component DescriptionINFOID:0000000001682707
COMPONENT DESCRIPTION
PTC Control Unit
The PTC control unit is attached on the A/C unit assembly. It controls
PTC heater by ambient temperature, water temperature, FAN ON
signal and temperature control dial.
PTC Heater
The PTC heater is attached on the A/C unit assembly. It generates
heat electrically.
Water Temperature Sensor
The water temperature sensor is attached on heater pipe. It detects
water temperature and converts it into a resistance value which is
then input in to PTC control unit.
Full Hot Switch
The full hot switch is attached on the A/C unit assembly. When the
temperature control dial at full hot position, then full hot switch is
turned ON.
Ambient Sensor
SJIA0906E
SJIA0907E
SJIA0908E
SJIA0909E