Suzuki 2006 SX4, Service Manual

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Air Conditioning System: Automatic Type 7B-46
A/C System Symptom Diagnosis
S6RW0C7224002
Condition Possible cause Correction / Reference Item
No cool air comes out (A/
C system does not
operate) No refrigerant Perform recovery, evacuation and charge
referring to “Operation Procedure for
Refrigerant Charge”.
Fuse blown Check related fuses, and then check for short
circuit to ground.
A/C switch faulty Check A/C switch referring to “Inspection of
HVAC Control Module and Its Circuit”.
Evaporator temperature sensor faulty Check evaporator temperature sensor
referring to “Evaporator Temperature Sensor
Inspection”.
A/C refrigerant pressure sensor faulty Check A/C refrigerant pressure sensor
referring to “A/C Refrigerant Pressure Sensor
and Its Circuit Inspection”.
Wiring or grounding faulty Repair as necessary.
ECM faulty Check ECM referring to “A/C System
Inspection at ECM”.
HVAC control module faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
Magnet clutch faulty Check magnet clutch referring to “Magnet
Clutch Inspection”.
Compressor drive belt loosened or
broken Adjust or replace drive belt.
Compressor faulty Check compressor.
Compressor relay faulty Check compressor relay referring to “A/C
System Relay Inspection”.
BCM faulty Check BCM referring to “Inspection of BCM
and Its Circuits in Section 10B”.
No cool air comes out
(radiator cooling fan
motor does not operate) Fuse blown Check related fuses, and then check for short
circuit to ground.
Wiring or grounding faulty Repair as necessary.
Condenser cooling fan motor relay faulty Check condenser cooling fan motor relay
referring to “A/C System Relay Inspection”.
Condenser cooling fan motor faulty Check condenser cooling fan motor referring to
“Condenser Cooling Fan Inspection”.
ECM faulty Check ECM referring to “A/C System
Inspection at ECM”.
HVAC control module faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
No cool air comes out
(blower motor does not
operate) Fuse blown Check related fuses, and then check for short
circuit to ground.
Blower motor controller faulty Check blower motor controller referring to
“Blower Motor Controller Inspection”.
HVAC control module faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
Wiring or grounding faulty Repair as necessary.
Blower motor faulty Check blower motor referring to “Blower Motor
Inspection in Section 7A”.
Blower motor relay faulty Check blower motor relay referring to “Blower
Motor Relay Inspection in Section 7A”.