Golf GTI L4-1781cc 1.8L SOHC (RD) (1987)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
1.
Remove the harness plug from the sensor and check the resistance across the terminals.
Coolant Temperature Sensor Specification
2
The resistance/coolant temperature relationship should be within the range shown above.
3.
If the values are not within specification, replace the sensor.
Note: When replacing the coolant temperature sensor, drain and refill the engine coolant.