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HAC-46 < DTC/CIRCUIT DIAGNOSIS > [WITHOUT 7 INCH DISPLAY] B257B, B257C AMBIENT SENSOR B257B, B257C AMBIENT SENSOR Description INFOID:0000000009722057 COMPONENT DESCRIPTION Ambient Sensor • The ambient sensor (1) is installed to the front bumper (left back). value which is then input into the A/C auto amp. Ambient Sensor Circuit AMBIENT TEMPERATURE INPUT PROCESS The A/C auto amp. equips a processing circuit for the ambient sensor input. However, when the temperature ° C (0.6 ° F) per 100 sec- onds. DTC Logic INFOID:0000000009722058 DTC DETECTION LOGIC NOTE: . • If there is an open circuit in the ambient sensor, A/C auto amp. registers extreme cold [ − 44 ° C ( − 47 ° F)] and adjusts the temperature control warmer. DTC CONFIRMATION PROCEDURE 1. CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT JSIIA1532JP JPIIA0612GB DTC Items (CONSULT screen terms) Diagnostic item is detected when... Possible cause B257B AMBIENT SENSOR Detected temperature at ambient sensor − 44 ° C ( − 47 ° F) or less • Ambient sensor (Ambient sensor circuit is open, B257C Detected temperature at ambient sensor ° C (212 ° F) or more |