Suzuki GA413, Service Manual

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AIR CONDITIONING 1B-7
Symptom Possible Cause Remedy
Cool air won’t come out or
insufficient cooling (A/C
system normal operative)
Compressor faulty
Air in A/C system
Air leaking from cooling unit or air duct
Heater and ventilation system faulty
Blower motor faulty
Excessive compressor oil existing in
A/C system
Check compressor.
Replace receiver/dryer, and evacua-
tion and charging.
Repair as necessary.
Check air inlet box Assy.
Check heater control lever Assy.
Check heater Assy.
Check blower motor.
Pull out compressor oil in A/C system
circuit, and replace compressor.
Cool air won’t comes out
only intermittently
Wiring connection faulty
Expansion valve faulty
Excessive moisture in A/C system
A/C controller faulty
Magnetic clutch faulty
Compressor thermal protector faulty
Excessive charge of refrigerant
Repair as necessary.
Check expansion valve.
Replace receiver/dryer, and evacua-
tion and charging.
Check A/C controller.
Check magnetic clutch.
Check compressor thermal protector.
Check charge of refrigerant.
Cool air comes out only at
high speeds
Condenser clogged
Insufficient charge of refrigerant
Air in A/C system
Drive belt slipping
Compressor faulty
Check condenser.
Check charge of refrigerant.
Replace receiver/dryer, and evacua-
tion and charging.
Check or replace drive belt.
Check compressor.
Cool air won’t comes out
only at high speeds
Excessive charge of refrigerant
Evaporator frosted
Check charge refrigerant.
Check evaporator.
Check A/C thermistor.
Insufficient velocity of
cooled air
Evaporator clogged or frosted
Air leaking from cooling unit or air duct
Blower motor faulty
Wiring or grounding faulty
Check evaporator.
Check A/C thermistor.
Repair as necessary.
Check blower motor.
Repair as necessary.