Out Of This World Coolant Temperature Sensor Wiring Diagram

It is a two wire thermistor immersed in coolant and measures its temperature.

Coolant temperature sensor wiring diagram. That one is in the left cylinder head between the first two spark plus. Check that the cooling fan stops. The engine coolant temperature sensor is temperature variable resistor which usually has a negative temperature coefficient.

It is normal for the cooling fan to sometimes rotate when the ignition switch is turned from acc to on. If it does not check the cooling fan relays and engine coolant temperature sensor and. Where is the cts sensor located.

On jeeps there are two coolant sensors. The one wire sensor in the back. Then there is another at the back drivers topside of the engine cylinder head just to the right of the valve cover this one has one wire.

The ect usually located in a coolant passage just before the thermostat. The ect sensor is critical to many ecm functions such as fuel injection ignition timing variable valve timing fuel and emission controls function transmission shifting and to turn the radiator cooling fan on and off as needed. The onboard computer uses the signal of ect as the main correction factor when calculating the ignition advance and the injection duration.

The coolant temp sender for the gauge has one wire dark green. Ex35 front wiperand washer system wiring diagram ex35 rear wiper and washer system schematics ex35 bcm wiring diagram ex35 ipdm e r intelligent power distribution module engine room circuit diagram open. Check cooling fan operation at low temperatures below 94 c 201 f turn the ignition switch on with the a c switch off.

The ect is connected to the thw terminal on the ecm. 1999 2002 g20 engine and emission control overhall system wiring diagram g20 main power supply and ground circui twiring diagram g20 air temperature sensor schematics g20. Coolant temperature sensor test for the jeep wrangler yj.