Causes of malfunctions and methods for their elimination
Attention:
- − The numbers indicate the sequence of the test.
- − Replace or repair defective parts.
Heater fan not working
A) Check fuse.
b) Check heater blower motor relay.
V) Check heater fan motor.
G) Check heater blower motor resistor.
d) Check heater blower switch.
e) Check the wiring for an open or short circuit.
Temperature controller switch does not work
A) Check engine coolant level.
b) Check the air conditioning control panel assembly.
Compressor does not turn on
A) Check the amount of refrigerant in the air conditioning system.
6) Check fuse.
V) Check compressor magnetic clutch.
G) Check compressor.
d) Check the refrigerant pressure switch.
e) Check the air conditioner switch.
and) Check the evaporator air temperature sensor.
h) Check the wiring for an open or short circuit.
The air is not cooling
A) Check the amount of refrigerant in the air conditioning system.
b) Check the system with a test manifold.
V) Check the tension of the compressor drive belt.
G) Check compressor magnetic clutch.
d) Check compressor.
e) Check the refrigerant pressure switch.
and) Check the thermistor and evaporator air temperature sensor.
h) Check the air conditioner switch.
And) Check the air conditioning control panel assembly.
To) Check the wiring for an open or short circuit.
Poor cooling
A) Check the amount of refrigerant in the air conditioning system.
b) Check the tension of the compressor drive belt.
V) Check compressor magnetic clutch.
G) Check compressor.
d) Check capacitor.
e) Check expansion valve.
and) Check the evaporator.
h) Check the high and low pressure lines.
And) Check the refrigerant pressure switch.
To) Check the air conditioning control panel assembly.
Air intake selector switch does not work
A) Check the air conditioning control panel assembly.
b) Check the air intake damper servo.
Air flow direction selection switch does not work
A) Check the air conditioning control panel assembly.
b) Check the servomotor of the damper for selecting the direction of air flows.
Idle speed does not increase when the air conditioner is on
A) Check the electronic engine control unit.
b) Check the wiring for an open or short circuit.
Condenser fan not working
A) Check fuse.
b) Check the condenser fan.
V) Check the electronic engine control unit.
G) Check the wiring for an open or short circuit.