Suzuki Wagon R Manual page 3625

1B-6 AIR CONDITIONING (OPTIONAL)
General Diagnosis Table
Condition
Cool air does not
come out (A/C system
improper operative)
When the blower fan
switch is OFF posi-
tion, blower motor
does not operate at A/
C switch is ON
Diagnosis
Possible Cause
A/C system inoperative
• No refrigerant
• Fuse blown
• A/C switch faulty
• Blower fan switch faulty
• A/C thermistor faulty
• Dual pressure switch faulty
• Pressure sensor faulty
• Wiring or grounding faulty
• ECT sensor faulty
• ECM faulty
Compressor inoperative (dose not
rotate)
• Fuse blown
• Compressor relay faulty
• Magnet clutch faulty
• Drive belt loose or broken
• Compressor faulty
• ECM faulty
Radiator (and condenser), cooling
fan motor inoperative
• Fuse blown
• Radiator cooling fan relay faulty
• Wiring or grounding faulty
• Radiator cooling fan motor faulty
• ECM faulty
Blower motor inoperative
• Fuse blown
• Blower resistor faulty
• Blower fan switch faulty
• Wiring or grounding faulty
• Blower motor faulty
• A/C blower motor relay faulty
• Wiring or grounding faulty
• A/C switch faulty
Correction
Recover, evacuation and charging.
Check fuses and check for short circuit to
ground.
Check A/C switch.
Check blower fan switch.
Check A/C thermistor.
Check dual pressure switch (if equipped).
Check pressure sensor (if equipped).
Repair as necessary.
Check ECT sensor.
Check ECM.
Check fuse and check for short circuit to
ground.
Check compressor relay.
Check magnet clutch.
Adjust or replace drive belt.
Check compressor.
Check ECM.
Check fuse and check short circuit to
ground.
Check radiator cooling fan relay.
Repair as necessary.
Check radiator cooling fan motor.
Check ECM.
Check fuse and check for short circuit to
ground.
Check blower motor resistor.
Check blower fan switch.
Repair as necessary.
Check blower motor.
Check A/C blower motor relay.
Repair as necessary.
Check A/C switch.