porsche Workshop Repair Guides

Porsche Workshop Service and Repair Manuals

Thermostat Monitoring|Page 1655 > < Thermostat Monitoring|Page 1653
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Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
Engine Coolant Temperature Sensor Monitoring

Engine Coolant Temperature Sensor Monitoring

The engine coolant temperature is electrical O.K., if the following condition is true:
Diagnosis threshold min. < engine coolant temperature < Diagnosis threshold max.

Range Check

Plausibility Check

The engine coolant temperature is plausible, if:
(reference temperature - threshold) < engine coolant temperature

flow chart:

Thermostat Monitoring|Page 1655 > < Thermostat Monitoring|Page 1653