The diagnosis circuit of Daewoo ESPERO fault code of 14

Published:2011/5/18 1:54:00 Author:Borg | Keyword: diagnosis circuit, Daewoo ESPERO | From:SeekIC

The code of 14 means that that the signal voltage of coolant temperature sensor is low--indicating high temperature(see as Figure 4 and Figure 16). The coolant temperature sensor controls the ECM signal with a thermistor. Firstly , ECM imposes a voltage on the sensor in No.410 circuit, when the engine becomes cool, the resistance of the sensor(thermistor) is getting high, then ECM will detect a high signal voltage. When the engine is getting hotter, the resistance of the sensor is becoming low, the voltage is coming down. When at the normal engine temperature, the ECM pin of C10 will get the voltage of 1.5~2.0V.



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