Suzuki GRAND VITARA 2005 Service Manual page 521

Condition
Cool air does not come
out or insufficient cooling
(A/C system normal
operation)
Cool air does not come
out only intermittently
Possible cause
Insufficient or excessive charge of
refrigerant
Condenser clogged
A/C evaporator clogged or frosted
Evaporator temperature sensor faulty
Expansion valve faulty
Desiccant clogged
Compressor drive belt loosened or
broken
Magnet clutch faulty
Compressor faulty
Air in A/C system
Air leaking from HVAC unit or air duct
Heater and ventilation system faulty
Temperature selector faulty
HVAC control module faulty
Temperature control actuator faulty
Blower motor faulty
Excessive compressor oil in A/C system Drain excessive compressor oil from A/C
Wiring connection faulty
Expansion valve faulty
Excessive moisture in A/C system
Magnet clutch faulty
Excessive amount of refrigerant
Air Conditioning System:
Correction / Reference Item
Check the amount of refrigerant and system
for leaks.
Check condenser referring to "A/C Condenser
Assembly On-Vehicle Inspection: in related
manual".
Check A/C evaporator and evaporator
temperature sensor referring to "A/C
Evaporator Inspection: in related manual" and
"A/C Evaporator Temperature Sensor
Inspection: in related manual".
Check evaporator temperature sensor
referring to "A/C Evaporator Temperature
Sensor Inspection: in related manual".
Check expansion valve referring to "Expansion
Valve On-Vehicle Inspection: in related
manual".
Check desiccant.
Adjust or replace drive belt.
Check magnet clutch referring to "Magnet
Clutch Operating Check: ".
Check compressor.
Replace desiccant, and then perform
evacuation and charge referring to "Operation
Procedure for Charging A/C with Refrigerant: ".
Repair as necessary.
Check HVAC unit.
Check temperature selector referring to "HVAC
Control Module and Its Circuits Inspection: in
related manual".
Check HVAC control module referring to
"HVAC Control Module and Its Circuits
Inspection: in related manual".
Check temperature control actuator referring to
"Temperature Control Actuator Inspection: in
related manual".
Check blower motor referring to "Blower Motor
Inspection: in Section 7A in related manual".
system circuit and compressor.
Repair as necessary.
Check expansion valve referring to "Expansion
Valve On-Vehicle Inspection: in related
manual".
Replace desiccant, and then perform
evacuation and charge referring to "Operation
Procedure for Charging A/C with Refrigerant: ".
Check magnet clutch referring to "Magnet
Clutch Operating Check: ".
Check the amount of refrigerant.
7B-16