Don't know what year you have but on a 02 S10 4.3L engine it is located on the drivers side of the engine between spark plugs #3 & #5.
Assuming this is the 4.3 engine, the ECT (Engine Coolant Temperature) sensor is located on the driver side cylinder head between #3 and #5 spark plugs.
The MAF is located on the intake side of the engine, usually between the airfilter and the throttle body. The ECT (Engine coolant temp sensor) is usually located on the side of the engine block.
The ECT or the Engine Coolant Temperature Sensor is a switch. This switch is located on the bottom of the radiator in the 1996 Camry.
G2 Engine Coolant Temperature (ECT) SensorG2 Engine Coolant Temperature (ECT) SensorG32 Engine Coolant Level (ECL) SensorG32 Engine Coolant Level (ECL) SensorG32 Engine Coolant Level (ECL) Sensor
The coolant temp sensor is the two wire sensor located near to where the upper radiator hose hooks to the engine.
Assuming this is a 4.3L engine the ect (engine coolant temp sensor) would be located next to the thermostat housing.
The Cylinder Head Temperature (CHT) sensor for the 2.3L engine is located between the two center ignition coils. The Engine Coolant Temperature (ECT) sensor for the 3.0L engine is located in the intake manifold to the right of the thermostat housing. The Engine Coolant Temperature (ECT) sensor for the 4.0L engine is located in the intake manifold behind the thermostat housing.
Engine Coolant Temperature (ECT) Sensor 4.6L Engine Coolant Temperature (ECT) Sensor is on left side of the alternator according to the pictures on my Chilton's book. 5.4L Engine Coolant Temperature (ECT) Sensor is on right side between the alternator and the top radiator hose / thermostat housing according to the pictures on my Chilton's book.
There is not a separate cooling fan sensor, it controlled by the ECM which get it's reading from the ECT (engine coolant temp sensor)
The ect stands for engine coolant temperature. It is the sensor that lets the computer know how warm the engine is.
location of engine cooling fan sensor
IAT= intake are temperature sensor ECT= engine coolant temp. sensor