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HAC-18 < SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING] SYSTEM Temperature Control INFOID:0000000011276572 • When ignition switch is in the ON position, A/C auto amp. always automatically controls temperature regardless of front air condi- tioning operational state. • A/C auto amp. calculates the target air mix door opening angle depending on set temperature, in-vehicle temperature, ambient temperature, and sunload. • Air mix door is controlled depending on the comparison of current air mix door opening angle and target air mix door opening angle. • Regardless of in-vehicle temperature, ambient temperature, and sunload, air mix door is fixed at the fully cold position when set temperature is 18.0 °C (60°F), and at the fully hot position when set temperature is 32.0 °C (90°F). Fail-safe INFOID:0000000011276573 FAIL-SAFE FUNCTION If a communication error exists between the A/C auto amp., and the AV control unit and preset switch for 30 seconds or longer, air conditioning is controlled under the following conditions: — 7% 4% 38% 24% 27% — 6% 2% 30% 17% 45% — 8% 2% — — 90% Discharge air flow MODE/DEF set- ting position Air outlet/distribution Ventilator Foot Defroster Front Rear Front Rear Center Side JMIIA0731GB A/C switch : ON Air outlet : AUTO Air inlet : FRE (Fresh air intake) Blower fan speed : AUTO Set temperature : Setting before communication error occurs |