Engine Coolant Temperature Sensor Circuit Diagram
The ect is connected to the thw terminal on the ecm. If your coolant temperature sensor isnt working efficiently your check engine light usually warns you of the hazardous heat thats affecting your vehicle.
The ect is a thermistor device with a negative temperature coefficient.
Engine coolant temperature sensor circuit diagram. It is a two wire thermistor immersed in coolant and measures its temperature. When the engine is cold the sensor thermistor resistance is high therefore the ecm will see high signal voltage. It operation has a huge effect on performance.
The following article discuss the 1996 peugeot 306 cooling fan circuit and wiring diagramherein you will find also detail explanation of peugeot 306 cooling fan basic principle. At normal engine operating temperature 85 c to 95 c the voltage will measure about 15 to 20 volts at the ecm. As the engine warms the sensor resistance becomes less and the voltage drops.
Engine coolant temperature sensor is usually located near the thermostat housing. On vr6 engines the coolant temperature gauge sensor terminals are 2 signal which is bluewhite and terminal 4 ground which is brown. A defective sensor can also produce black smoke from the exhaust pipe since more gas is being used than necessary.
One for the computer and a second one for the temperature gauge. Another symptom of a problem with the coolant temperature sensor is an overheating engine. The sensor for the computer will have at least two wires while the sensor for the gauge often has just one wire.
2 fan motors 3 relays control unit and the coolant temperature thermistor ntc. This can cause the computer to incorrectly compensate for a lean signal which can result in overheating and even misfires or engine ping. The ect usually located in a coolant passage just before the thermostat.
The engine coolant temperature sensor is temperature variable resistor which usually has a negative temperature coefficient. Ops truck most likely has a 57 liter v8 or a 43 liter v6. Perhaps somebody could post a schematic for a 1998 57 liter gm v8.
In many case you may find two sensors. The less common options were the 50 liter v8 74 liter v8 and some kind of a diesel engine. The coolant temperature sensor can also fail in a manner that causes it to send a permanently hot signal.
Engine coolant temperature sensor circuit diagram. As with the 4 cylinder engines this 4 pin sensor is also a combination sensor but the circuit is shared with the after run coolant fan control. Engine coolant temp sensor wires cut.
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. The engine cooling fan system is made up of the following parts. The ect is one of the main inputs to the ecm.
Wiring Diagram For Temp Gauge Online Wiring Diagram
13b Dtc P0118 Engine Coolant Temperature Circuit High Input
Dodge Charger Questions Where Is The Engine Coolant Temperature
Circuit Diagram 97 Grand Marquis Sensor Micro Switch Wiring Diagram
13b Dtc P0118 Engine Coolant Temperature Circuit High Input
P0118 2008 Nissan Versa Engine Coolant Temperature Sensor Circuit High
Has Any One Installed Pump Type Heater On The Coolant System Priuschat
Circuit Diagram 97 Grand Marquis Sensor Micro Switch Wiring Diagram
0 Response to "Engine Coolant Temperature Sensor Circuit Diagram"
Post a Comment