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HA -174 HEATING, VENTILATION AND AIR CONDITIONING DTC B1257 AQS OPEN COMPONENT LOCATION EF8D2F76 AQS Sensor is Located at Front Aide of Condensor SCMHA6707L GENERAL DESCRIPTION ED4DF3B0 AQS(Air Quality System) keeps air inside in the most suitable state for driver. In polluted area AQS detects hazardous DTC DESCRIPTION E12FB0BD The A/C controller sets DTC B1257 if there is an open circuit in AQS sensor signal harness or the measured voltage value DTC DETECTING CONDITION EB1B1045 Item Detecting Condition Possible cause DTC Strategy • Voltage check Threshold value • > 4.9V Detecting time • 1 sec FAIL SAFE • AQS function OFF • Open Circuit in power harness • Open circuit in ground harness • Faulty AQS Sensor connected part SPECIFICATION ECC6418A Refer to DTC B1258. MONITOR SCANTOOL DATA EA426CBE 1. Connect scantool to Data Link Connector(DLC). 2. Engine "ON" |