Pajero II Workshop Manual 1991 · FUEL · страница 133 из 339 · Открыть оригинал PDF ↗

Текст распознан со скана. Числа и обозначения можно сверить с оригиналом ниже.

OPERATION

The engine coolant temperature sensor converts
the enginecoolant temperature intovoltage
and inputs it to the engine control unit;which
then controls the fuel injection rate and fast idle
basedonthe
speed whenthe engine is cold
input signal:
Thepowerinthe enginecontrol unit is
supplied via a resistor in the unit to the engine
conlant temperature sensor: Through the sensor
ness side ch is a kind of resistor,it is earthed in the
nectorengine control unit The engine coolant tempera-
ture sensor resistor has such characteristic that
its resistance decreases as the coolant tempera-
ture rises

The engine coolant temperature sensor terminal
voltage increasesordecreasesas thesensor
resistance increases Or decreases. Therefore, the
engine coolant temperature sensor terminal volt-
age changes with the coolant temperature, de-
creasing aS the temperature rises

TROUBLESHOOTING HINTS

If the fast idle speed is inadequate or the engine
emits dark smoke during engine warm up operation;
the engine coolant temperature sensor is often faulty:

Проверка

Using MUT-II

Таблица в оригинале

Распознанный текст таблицы — требует сверки с оригиналом

Function Item No,	Data display	Check condition	Coolant tempe	rature 'C (PF) Standard value %C (PF)
Data reading 21	Sensor t	Ignition switch: ON or i i	At-20 (-4)	-20 (-4)
	emperaure	ngne operatng	At 0 (32)	0 (321
			At 20 (68)	[20 (68)
			At 40 (104)	40 (104)
			At 80 (1761	80 (176)
ARNESS INSPECTION Harness side connector Harness side connector	9FU0253	Check for continuity circuit Connector: Disco	of the earth nnected	2 OK Repair the harness (02] (B12

HARNESS INSPECTION

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