Ptc (Positive Temperature Coefficient) System; Overview - SSANGYONG Kyron Repair Manual

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PTC (POSITIVE TEMPERATURE COEFFICIENT) SYSTEM

1. OVERVIEW

The supplementary electrical heater is installed in DI engine equipped vehicle as a basic equipment. The PTC system
is operated according to two temperature values measured at the coolant temperature sensor and HFM sensor.
This device is mounted in the heater air outlet and increase the temperature of air to the passenger compartment.
Because PTC system is heated by electrical power, high capacity alternator is required. (Alternator of 12V 75A/
90A has changed to 12V 140A)
Non-operational Condition - During engine cranking
PTC Assembly
PTC Ground
* The ground ring terminal should be
secured as shown in below figure.
Mounting bolt
PTC earthling
terminal
Earth plate
Tightening torque: 6 ~ 10 Nm
AIR CONDITIONING SYSTEM
KYRON SM - 2005.09
- When too low battery voltage (Below 11V)
- During preheating process of glow plugs
PTC Relay and Fuse
PTC Heater 2 (40A)
PTC Heater 3 (40A)
Engine ECU
PTC (Relay 1)
PTC Heater 1 (40A)
PTC (Relay 2)
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN