|
|
HAC-18 < SYSTEM DESCRIPTION > [AUTOMATIC AIR CONDITIONING] AUTOMATIC AIR CONDITIONING SYSTEM AIR OUTLET CONTROL • While air outlet is in automatic control, A/C auto amp. selects the mode door position depending on a target air mix door angle and • If ambient temperature is excessively low, D/F is selected to pre- vent windshield fogging when air outlet is set to FOOT. TEMPERATURE CONTROL • When ignition switch is in the ON position, A/C auto amp. always automatically controls temperature regardless of air conditioner • A/C auto amp. calculates the target air mix door opening angle depending on set temperature, in-vehicle temperature, ambient • 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 ° C (60 ° F), and at the fully hot position when set temperature is 32 ° C (90 ° F). AIR INLET FUNCTION • While air inlet is in automatic control, A/C auto amp. selects air inlet (fresh air intake, 20% fresh air intake, or recirculation) • Air inlet is fixed to 80% FRE, only when the conditions are satisfied as follows: - Air inlet is FOOT or D/F ° C (36 ° F) or less - Maximum fan speed AIR FLOW CONTROL Description • A/C auto amp. changes duty ratio of blower motor drive signal and controls air flow continuously. When air flow is increased, duty ratio of blower motor drive signal gradually increases to prevent a sudden increase in • In addition to instruction control and automatic control, air flow control is compose of starting fan speed control, low coolant temperature starting control, high in-vehicle temperature starting control, and blower speed con- Automatic Air Flow Control • A/C auto amp. decides target air flow depending on target air mix door opening angle. A/C switch The compressor control (switch indicator) is turned between ON ⇔ OFF by pressing this switch each time only when blower fan is activated. Rear window defogger Rear window defogger (switch indicator) is turned between ON ⇔ OFF by pressing this switch each time. . JSIIA1334GB JPIIA0633GB JPIIA0634GB |