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10A-30
PTC SYSTEM
POSITIVE TEMPERATURE COEFFICIENT (PTC) SYSTEM
The supplementary electrical heater is installed in D27DT engine equipped vehicle as a basic equipment. The PTC
system is operated by the measured temperature values at the coolant temperature sensor and the HFM sensor. This
device improves the heating effect by increasing the temperature of flowing air into the passengers room. This system
needs higher electric power than conventional system due to it heats the ceramic in PTC with the electricity. And, the
alternator capacity has been largely increased (12 V ~ 75 A / 90 A to 12 V ~ 140 A).
Non-operational Condition
- During engine cranking
- Too low battery voltage (below 11 V)
- During preheating process of glow plugs
COMPONENTS LOCATOR
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
PTS unit
PTC operating relay
Engine ECU
Y220_10A1055
FFH/PTC SYSTEM
REXTON SM - 2004.4
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