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Volvo Workshop Service and Repair Manuals

Radiator Cooling Fan Temperature Sensor / Switch > < Coolant Temperature Sensor/Switch (For Computer)|Specifications|Page 788
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Coolant Temperature Sensor/Switch (For Computer): Service and Repair

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Drain off enough coolant so that there is none left in the expansion tank.

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Remove thermostat housing (2 TORX 40 screws).

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Disconnect sensor.

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Disconnect terminal pins from connector (see Image) in order to thread the wiring through a ring wrench.

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Remove temperature sensor and replace.

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Test sensor. 

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Reinstall in reverse order.

NOTE:  Do not forget to top up coolant. Then run engine to normal operating temperature and check coolant level.

Radiator Cooling Fan Temperature Sensor / Switch > < Coolant Temperature Sensor/Switch (For Computer)|Specifications|Page 788