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Coolant Temperature Sensor

The temperature sensor measures the temperature of the coolant, and transmits appropriate signals to the control device. The sensor comprises a NTC-element (NTC - negative temperature coefficient), which reduces its resistance with increasing temperature. When a faulty sensor controller provides backup value. This leads to the fact that properly aged duration prior and subsequent heating.

PERFORMANCE ORDER

1. Engine 2.0 L: remove the 6-pin plug to the relay control heating and measure the resistance between the chip 6 on the plug and the housing (engine block). If the resistance goes to infinity, in the conductive line breakage. If less than 1 ohm, the short circuit of the electric line. Specification: at 25 ?� C: 2442 ohms 170 ohms + at 80 ?� C: + 291 ohms and 16 ohms. 2. Engine 2.2 / 2.5 L: reduce the pressure of the coolant. To do this, remove the cap from the expansion tank filled with coolant. 3. Disconnect plug (B 11/4) and remove the coolant temperature sensor. 4. Disconnect the plug (11 / 8x1) and remove the "coolant temperature sensor for further warming" on the cylinder head.

Check

PERFORMANCE ORDER

1. Suspend the sensor in a water bath and slowly heat it. 2. Check with an ohmmeter resistance temperature sensor. The measured value is OK if it is within a tolerance of + 5% (see table Resistance of thermal sensor). 3. If you are not measuring sensor reaches a predetermined value, then it should be replaced.

Setting

PERFORMANCE ORDER

1. Screw the sensor to a torque of 20 Nm 2. Push the cable plug (connector). 3. Pour the coolant. 4. Warm up the engine and check the coolant level.

Resistance temperature sensor

TEMPERATURE	RESISTANCE
20 ?� C	2500 Ohm
30 ?� C	1700 Ohm
40 ?� C	1170 Ohm
50 ?� C	830 ohms
60 ?� C	600 ohms
70 ?� C	435 ohms
80 ?� C	325 ohms
90 ?� C	245 ohms
100 ?� C	185 ohms