Self-diagnosis System
1.Description
In the self-diagnosis system, the ECU transmits any abnormality that occurs in the indicator, sensors, and actuator to the control panel for display to notify the (more…)
Heater and Aircondition System
Automatic Aircondition Systm TAO – Temperature Air Outlet
1.What is TAO?
In order to speedily adjust the interior temperature to the set temperature, the ECU calculates the outlet air temperature (Temperature Air Outlet, TAO) based on the temperature information (more…)
Automatic Aircondition Systm Airflow Temperature Control
1.Individual A/C control for left and right
In some models, the temperature and airflow control can be performed based on individual temperature setting of driver’s side and front passenger side.
The (more…)
Automatic Aircondition Systm Warm-up Control
1.Control
When the airflow mode is set at FOOT or BI-LEVEL and blower speed selector is set at AUTO, the blower speed is controlled based on the coolant temperature.
(1)When the coolant temperature is (more…)
Automatic Aircondition Systm Air Inlet Control
1.Description
Air inlet control normally introduces exterior air. When the gap between the interior temperature and the set temperature is large, the air inlet control automatically switches to the interior (more…)
Automatic Heater & Aircondition Systm Servomotor
1.Air mix servomotor
(1)Construction
The air mix servomotor consists of the motor, limiter, potentiometer and moving contact, etc., as shown in the figure and it is activated by the signal from the ECU.
(2)Operation
When (more…)
Automatic Heater & Aircondition Systm Sensor
1.Interior temperature sensor
(1)Construction
The interior temperature sensor uses the thermistor and is installed in the instrument panel with the aspirator. The aspirator utilizes the air blown from (more…)
Automatic Aircondition System
Outline
1. Auto A/C (Air Conditioner) System
The auto A/C system is activated by setting the desired temperature with the temperature selector and pressing the AUTO switch. The system immediately (more…)
Automotive Air Condition System Performance Test
1.Description
For cooling performance of the A/C, measure the difference of temperature between the inlet port and outlet port of the air, and judge whether the value is within the standard range in the (more…)
Automotive Air Condition System Inspection with Manifold Gauge
1.Normal
If the refrigeration cycle is normal, the gauge pressure values are as shown.
Low-pressure side
0.15 to 0.25 MPa (1.5 to 2.5 kgf/cm