Suzuki Swift Sport 2004 Service & Repair Manual page 960

7B-12 Air Conditioning System: Manual Type
High pressure gauge
Condition
Pressure is higher than
acceptable range
("A" area)
Pressure is lower than
acceptable range
("B" area)
Low pressure gauge
Condition
Pressure is higher than
acceptable range
("C" area)
Pressure is lower than
acceptable range
("D" area)
Possible cause
Refrigerant overcharged
Expansion valve frozen or clogged
Clogged refrigerant passage of high pressure side Clean or replace.
Radiator cooling fan malfunction
(Insufficient cooling of condenser)
Dirty or bent condenser fins
(Insufficient cooling of condenser)
Compressor malfunction (Insufficient oil etc.)
Engine overheat
Insufficient refrigerant
(Insufficient charge or leakage)
Expansion valve malfunction
(valve opens too wide)
Compressor malfunction
(Insufficient compression)
Possible cause
Expansion valve malfunction
(valve opens too wide)
Compressor malfunction
(Insufficient compression)
Insufficient refrigerant
(Insufficient charge or leakage)
Expansion valve malfunction
(valve opens too narrow)
Clogged refrigerant passage (crashed pipe)
Correction
Recharge.
Check expansion valve.
Check radiator cooling fan.
Clean or repair.
Check compressor.
Check engine cooling system
referring to "Engine Cooling Symptom
Diagnosis in Section 1F".
Check for leakage, repair if necessary
and recharge.
Check expansion valve.
Check compressor.
Correction
Check expansion valve.
Check compressor.
Check for leakage, repair if necessary
and recharge.
Check expansion valve.
Repair or replace.