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 Read more Automatic Heater & Aircondition Systm Servomotor
Monthly Archives: January 2012
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 Read more Automatic Heater & Aircondition Systm Sensor
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 Read more Automatic Aircondition System
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 Read more Automotive Air Condition System Performance Test
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
Diagnosis of Malfunction in Automotive Refrigeration Cycle
1.Importance of checking pressure
Checking the refrigerant pressure while the air conditioning is functioning allows you to assume the trouble area or the cause. Therefore, it is important to confirm Read more Diagnosis of Malfunction in Automotive Refrigeration Cycle
Automotive Air Condition System Visual and Aural Check
1.Is the drive belt loose?
If the drive belt is too loose, it will slip; this will cause it to wear out.
2.Amount of air blow is insufficient
Check for dirt and clog in the clean air filter.
3.Noise Read more Automotive Air Condition System Visual and Aural Check
Automotive Air Condition System Inspection/Test
Notes for Maintenance of Air Conditioning System
1.When handling refrigerant the following precautions must be observed
Do not handle refrigerant in an enclosed area or near an open flame.
Always Read more Automotive Air Condition System Inspection/Test
Automotive Air Condition System Idle-up Control
1.Function
In idle state such as in slow traffic or during stop, the engine output is small.
In this state, driving the compressor applies overload to the engine, which results in overheating or engine Read more Automotive Air Condition System Idle-up Control
Automotive Air Condition System Dual A/C (Rear Cooler) Control
1.Function
The dual A/C and the refrigeration cycle with rear cooler have evaporators and expansion valves for front and rear. These make the refrigerant circulate using a compressor.
To control two Read more Automotive Air Condition System Dual A/C (Rear Cooler) Control