Suzuki Grand Vitara XL-7 Service Manual page 33

1B-4 AIR CONDITIONING (OPTIONAL)
Condition
Cool air does not come
out or insufficient
cooling (A/C system
normal operative)
Cool air does not come
out only intermittently
Cool air comes out only
at high speed
Cool air does not come
out only at high speed
Insufficient velocity of
cooled air
Possible Cause
D Compressor faulty
D Air in A/C system
D Air leaking from cooling unit or air
duct
D Heater and ventilation system faulty
D Blower motor faulty
D Excessive compressor oil existing in
A/C system
D Wiring connection faulty
D Expansion valve faulty
D Excessive moisture in A/C system
D A/C controller faulty
D Magnetic clutch faulty
D Excessive charge of refrigerant
D Condenser clogged
D Insufficient charge of refrigerant
D Air in A/C system
D Compressor drive belt loosen or bro-
ken
D Compressor faulty
D Excessive charge of refrigerant
D A/C evaporator frosted
D A/C evaporator clogged or frosted
D Air leaking from cooling unit or air
duct
D Blower motor faulty
D Wiring or grounding faulty
Correction
Check compressor.
Replace condenser dryer, and
evacuation and charging.
Repair as necessary.
Check blower unit.
Check heater control lever assembly.
Check heater unit.
Check blower motor.
Pull out compressor oil in A/C system
circuit, and replace compressor.
Repair as necessary.
Check expansion valve.
Replace condenser dryer, and
evacuation and charging.
Check A/C controller.
Check magnetic clutch.
Check charge of refrigerant.
Check condenser.
Check charge of refrigerant.
Replace condenser dryer, and
evacuation and charging.
Adjust or replace compressor drive belt.
Check compressor.
Check charge refrigerant.
Check A/C evaporator.
Check A/C evaporator thermistor.
Check A/C evaporator.
Repair as necessary.
Check blower motor.
Repair as necessary.