Subaru Legacy

since 1990-1998 release

Repair and operation of the car



Subaru of Legasi
+ 1.1. Identification numbers
+ 2. Maintenance
+ 3. Engines
- 4. Heating, ventilation
   + 4.1. Cooling system
   + 4.2. System of heating
   + 4.3. Air conditioning system
   4.4. System of climate control
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Systems of start, ignition
+ 8. Transmissions
+ 9. Coupling, shaft
+ 10. Brake system
+ 11. Suspension bracket
+ 12. Steering
+ 13. Body
+ 14. Electric equipment





4.4. System of climate control

GENERAL INFORMATION

Arrangement of components of system of climate control


Control panel system of climate control


Arrangement of the diagnostic socket of system of climate control

The automatic system of climate control provides with regulation of temperature set by the driver irrespective of external air temperature. The control unit of system receives information from several sensors to maintain temperature in salon of the car at the demanded level. The sensor of temperature of cooling liquid is located in a heater casing. The sensor of temperature of the arriving air is located outside of the evaporator. The solar sensor is located on the dashboard from the driver. The sensor of temperature of air is located behind a forward lattice, and the control unit is located in the dashboard (see rice. Arrangement of components of system of climate control).

The system of climate control is equipped with system of self-diagnostics which collects information on malfunctions and will transform them to codes which register in memory of the computer.

For check of codes of self-diagnostics include ignition, without starting the engine and connect an additional wire separate contact to the designated groove on the diagnostic socket of central air (see rice. Arrangement of the diagnostic socket of system of climate control).

There are 4 categories of self-diagnostics. For a choice of category of diagnostics use buttons of increase or reduction of the set temperature of system of climate control.

Category 1. All light-emitting diodes and segments of the display light up.

Category 2. The malfunction code is highlighted.

Category 3. Check of executive mechanisms is made.

Category 4. Calibration of the sensor of temperature is made.

Code
Malfunction
20
all sensors are serviceable
21
break in temperature sensor chain in the car
21
temperature sensor chain in the car is closed
22
break in a chain of the sensor of external temperature
22
short circuit in a chain of the sensor of external temperature
23
break in a chain of the sensor of the let-in air
23
short circuit in a chain of the sensor of the let-in air
24
break in a chain of the sensor of temperature of cooling liquid
24
short circuit in a chain of the sensor of temperature of cooling liquid
25
break in a chain of the solar sensor
26
break in a PBR sensor chain
26
short circuit in a PBR sensor chain