Suzuki GRAND VITARA XL-7 Owner's Manual page 32

Condition
Cool air does not
come out or insuffi-
cient cooling (A/C sys-
tem normal operative)
Cool air does not
come out or insuffi-
cient cooling (A/C sys-
tem normal operative)
Cool air does not
comes out only inter-
mittently
Cool air comes out
only at high speeds
Cool air does not
comes out only at high
speeds
Insufficient velocity of
cooled air
Possible Cause
Insufficient or excessive charge of refrigerant
Refrigerant leak in system
Condenser clogged
A/C evaporator clogged or frosted
A/C evaporator temperature sensor (A/C evap-
orator thermistor) faulty
A/C controller faulty
Expansion valve faulty
Drive belt slipping
Magnetic clutch faulty
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 sys-
tem
Wiring connection faulty
Expansion valve faulty
Excessive moisture in A/C system
A/C controller faulty
Magnetic clutch faulty
Excessive charge of refrigerant
Condenser clogged
Insufficient charge of refrigerant
Air in A/C system
Drive belt slipping
Compressor faulty
Excessive charge of refrigerant
A/C evaporator frosted
A/C evaporator clogged or frosted
Air leaking from cooling unit or air duct
Blower motor faulty
Wiring or grounding faulty
AIR CONDITIONING (OPTIONAL) 1B-7
Correction
Check charge of refrigerant.
Check system for leaks.
Check condenser.
Check A/C evaporator.
Check A/C evaporator tempera-
ture sensor (A/C evaporator ther-
mistor).
Check A/C controller.
Check expansion valve.
Check or replace drive belt.
Check magnetic clutch.
Check compressor.
Replace condenser dryer, and then
perform evacuation and charging.
Repair as necessary.
Check air inlet box assembly.
Check heater control lever assem-
bly.
Check heater assembly.
Check blower motor.
Pull out compressor oil in A/C sys-
tem circuit, and replace compres-
sor.
Repair as necessary.
Check expansion valve.
Replace condenser dryer, and then
perform evacuation and charging.
Check A/C controller.
Check magnetic clutch.
Check charge of refrigerant.
Check condenser.
Check charge of refrigerant.
Replace condenser dryer, and then
perform evacuation and charging.
Adjust or replace drive belt.
Check compressor.
Check charge refrigerant.
Check A/C evaporator.
Check A/C thermistor.
Check A/C evaporator.
Repair as necessary.
Check blower motor.
Repair as necessary.