INEFFECTIVE OPERATION OF A/C DURING ENGINE STOP (i-stop system) [PYUL]: Outline

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INEFFECTIVE OPERATION OF A/C DURING ENGINE STOP (I-STOP SYSTEM) (PYUL) DESCRIPTION AND POSSIBLE CAUSE

Description	The A/C airflow temperature is too high or low compared with the set temperature while the i-stop function is operating.
Possible cause	A/C system malfunction DTCs are stored in the following modules. PCM Dash-electrical supply unit Body control module (BCM) Ambient temperature sensor malfunction Malfunction in wiring harness (including connector/terminal) between PCM and ambient temperature sensor Malfunction in wiring harness (including connector/terminal) between climate control unit and passenger compartment temperature sensor Malfunction in wiring harness (including connector/terminal) between body control module (BCM) and solar radiation sensor Cabin temperature of target vehicle cannot be calculated. (Full-auto air conditioner) Passenger compartment temperature sensor malfunction Solar radiation sensor malfunction Ambient temperature sensor malfunction Climate control unit falsely recognizes MAX COLD or MAX HOT of air mix door on driver-side Driver-side air mix actuator malfunction Driver-side air mix actuator position sensor malfunction Driver-side air mix door or linkage stuck
Courtesy of MAZDA MOTORS CORP.
1	PCM
2	Ambient temperature sensor
Courtesy of MAZDA MOTORS CORP.
1	Climate control unit
2	Passenger compartment temperature sensor
Courtesy of MAZDA MOTORS CORP.
1	Body control module (BCM)
2	Humidity sensor/solar radiation sensor/auto light sensor/rain sensor