General Diagnosis Table - Suzuki Ignis Service Manual

GENERAL DIAGNOSIS TABLE

Condition
Cool air won't come
out (A/C system won't
operative)
Cool air won't come
out (A/C compressor
won't operative)
Cool air won't come
out (A/C condenser
cooling fan motor
won't operative)
Cool air won't come
out (Blower fan motor
won't operative)
DIAGNOSIS
Possible Cause
No refrigerant
Fuse blown
A/C switch faulty
Blower fan switch faulty
A/C evaporator temperature sensor
faulty
A/C refrigerant pressure switch faulty
Wiring or grounding faulty
ECT sensor faulty
ECM and its circuit faulty
ECM faulty
Magnet clutch faulty
Compressor drive belt loosen or broken Adjust or replace drive belt.
Compressor faulty
Compressor thermal switch faulty
Fuse blown
Wiring or grounding faulty
Radiator/condenser cooling fan motor
relay faulty
Radiator/condenser cooling fan motor
faulty
ECM faulty
Fuse blown
Blower fan motor resistor faulty
Blower fan switch faulty
Wiring or grounding faulty
Blower fan motor faulty
AIR CONDITIONING (OPTIONAL) 1B-5
Correction
Perform recover, evacuation and charging.
Check fuses in circuit fuse and main fuse
boxes, and check short circuit to ground.
Check A/C switch.
Check blower fan switch referring to Sec-
tion 1A.
Check A/C evaporator temperature sen-
sor.
Check A/C refrigerant pressure switch.
Repair as necessary.
Check ECT sensor referring to Section
6E1.
Check ECM and its circuit referring to Sec-
tion 6E1.
Check ECM and its circuit referring to Sec-
tion 6E1.
Check magnet clutch.
Check compressor.
Check compressor thermal switch
Check fuses in circuit fuse and main fuse
boxes, and check short circuit to ground.
Repair as necessary.
Check radiator/condenser cooling fan
motor relay No.1, No.2 and No.3.
Check radiator/condenser cooling fan
motor.
Check ECM and its circuit referring to Sec-
tion 6E1.
Check "HTR" fuse in circuit fuse box and
main fuses, and check short circuit to
ground.
Check blower fan motor resistor to Section
1A.
Check blower fan switch referring to Sec-
tion 1A.
Repair as necessary.
Check blower fan motor referring to Sec-
tion 1A.