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Suzuki SX4 Service Manual page 1008

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7B-14 Air Conditioning System: Manual Type
Condition
Cool air does not come
out or insufficient cooling
(A/C compressor normal
operation)
Cool air does not come
out only intermittently
Cool air comes out only at
high speed
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
Blower motor faulty
Excessive compressor oil in A/C system Drain excessive compressor oil from A/C
Wiring connection faulty
Evaporator temperature sensor faulty
Expansion valve faulty
Excessive moisture in A/C system
Magnet clutch faulty
Excessive amount of refrigerant
Condenser clogged
Insufficient charge of refrigerant
Air in A/C system
Compressor drive belt loosened or
broken
Compressor faulty
Correction / Reference Item
Check the amount of refrigerant and system
for leaks.
Check condenser referring to "Condenser
Assembly On-Vehicle Inspection: Manual
Type".
Check A/C evaporator and evaporator
temperature sensor referring to "Evaporator
Inspection: Manual Type" and "Evaporator
Temperature Sensor Inspection: Manual Type".
Check evaporator temperature sensor
referring to "Evaporator Temperature Sensor
Inspection: Manual Type".
Check expansion valve referring to "Expansion
Valve Inspection: Manual Type".
Check desiccant and cap with filter.
Adjust or replace drive belt.
Check magnet clutch referring to "Magnet
Clutch Inspection: Manual Type".
Check compressor.
Replace condenser, and then perform
evacuation and charge referring to "Operation
Procedure for Refrigerant Charge: Manual
Type".
Repair as necessary.
Check HVAC unit.
Check blower motor referring to "Blower Motor
Inspection in Section 7A".
system circuit and compressor.
Repair as necessary.
Check evaporator temperature sensor
referring to "Evaporator Temperature Sensor
Inspection: Manual Type".
Check expansion valve referring to "Expansion
Valve Inspection: Manual Type".
Replace condenser, and then perform
evacuation and charge referring to "Operation
Procedure for Refrigerant Charge: Manual
Type".
Check magnet clutch referring to "Magnet
Clutch Inspection: Manual Type".
Check the amount of refrigerant.
Check condenser referring to "Condenser
Assembly On-Vehicle Inspection: Manual
Type".
Check the amount of refrigerant and system
for leaks.
Replace condenser, and then perform
evacuation and charge referring to "Operation
Procedure for Refrigerant Charge: Manual
Type".
Adjust or replace drive belt.
Check compressor.

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