The fault code 51 and 54 detection circuit of Daewoo ESPERO

Published:2011/5/17 1:13:00 Author:Borg | Keyword: detection circuit, Daewoo ESPERO | From:SeekIC

The computer codes of 51 and 54 represent the potentiometer is malfunctioning, which is used to adjust the CO content in the emission. CO potentiometer is an adjustable resistance to control the delivering signal voltage to ECM. After the repairing, the CO content in the engine emission is supposed to be 0.3%~0.5% , in the normal condition, the D8 signal voltage on ECM plug should be 0.08~3.8V. The output signal of CO potentiometer is one of the signals that control the fuel injection, whose circuit connection are shown in Figure 28.



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