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DIESEL CONTROL SYSTEM FLA -331 DTC P0642 SENSOR REFERENCE VOLTAGE "A" CIRCUIT LOW COMPONENT LOCATION E81EF00E ECM EGNG007T GENERAL DESCRIPTION EB034AA4 ECM is activated by power supply. Signals from several sensors, such as CKPS and APS, is inputted to ECM. Comparing DTC DESCRIPTION E914BDC8 P0642 is set when the voltage below 4700mV - minimum voltage of sensor power supply 1 generates from ECM - is DTC DETECTING CONDITION E106D213 Item Detecting Condition Possible Cause DTC Strategy • Voltage monitoring Enable Conditions • IG KEY "ON" ThresholdValue • when the voltage is below the minimum voltage of sensor power supply. DiagnosticTime • 100ms Fuel Cut NO EGR Off NO Fuel Limit YES Fail Safe MIL NO • Limp home mode is activated. (engine speed is • MAFS power supply circuit |