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HA -86 HEATING, VENTILATION AND AIR CONDITIONING DTC B1200 HUMIDITY SENSOR OPEN (HIGH) COMPONENT LOCATION E55A86D0 Humidity Sensor SCMHA6500L GENERAL DESCRIPTION E813CFB8 Humidity sensor located at crush pad, detects in-car humidity for in-car humidity control. If ambient air temperature or DTC DESCRIPTION E26F8FC5 The A/C controller sets DTC B1200 if there is an open circuit in humidity sensor signal harness or the measured frequency DTC DETECTING CONDITION E609B0DF Item Detecting Condition Possible cause DTC Strategy • Frequency check Threshold value • > 7,100 Hz Detecting time • 10msec FAIL SAFE • Control with the value of 10% • Open Circuit in signal harness • Faulty Humidity Sensor SPECIFICATION EF7B8179 Relative humidity(%) Frequency(Hz) Relative humidity(%) Frequency(Hz) 20 7,100 60 6,600 30 6,976 70 6,468 40 6,853 80 6,330 50 6,728 90 6,186 |