Standard sensor (combined with a switch «overheat» for coolant temperature indicator), on 4-cylinder models without air conditioning.
Electronic thermal switch (has other functions) in models with 4-cylinder engine equipped with air conditioning, as well as in models with 5 and 6-cylinder engines.
The location of the temperature sensor contacts is shown in the illustrations.
Hint: When the coolant temperature is high, an additional flashing red warning light or symbol will illuminate «coolant».
Faults
An inaccurate coolant temperature indicator with an inaccurate indicator of the amount of gasoline at the same time indicates a damaged voltage regulator.
The reason for the completely absent indication can be both the temperature sensor and the device.
With the correct indicator, but at the same time the indicator flashes, you should check the coolant level sensor located in the expansion tank.
Disconnect the temperature sensor plug in the engine compartment.
Checking the coolant temperature indicator
With a piece of wire, extend a separate plug-in contact to the temperature indicator (brown-yellow wire) in multi-pin plug (see also illustrations on the next page) and lead to bare metal («mass»).
The layout of the temperature sensor in a 4-cylinder engine. The numbers indicate:
1 - signaling device contact «coolant overheating»;
2 — «weight» (frame);
3 - coolant temperature indicator.
Vehicles with 4-cylinder engines use the same temperature sensor that you see in the illustration below in vehicles with 5- and 6-cylinder engines.
Briefly turn on the ignition.
If the indicator needle, which was motionless before, now begins to move along the scale, it means that the temperature sensor is faulty - replace it.
If nothing changes in the indicator, then there is a break in the wiring or a defect in the indicator itself. Its removal is described at the beginning of the chapter.
Visitor comments