Diagnosis; General Diagnosis Table - Suzuki Jimny 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 thermistor faulty
Dual pressure switch faulty
Wiring or grounding faulty
ECT sensor faulty
ECM and its circuit faulty
4WD controller faulty
ECM faulty
Magnet clutch faulty
Compressor drive belt loosen or broken Adjust or replace drive belt.
Compressor faulty
Fuse blown
Wiring or grounding faulty
Condenser cooling fan motor relay
faulty
Condenser cooling fan motor 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 main and circuit 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 thermistor.
Check dual pressure switch.
Repair as necessary.
Check ECT sensor referring to Section 6E.
Check ECM and its circuit referring to Sec-
tion 6E.
Check 4WD controller referring to Section
3D.
Check ECM and its circuit referring to Sec-
tion 6E.
Check magnet clutch.
Check compressor.
Check "A/C" fuse in main fuse box, and
check short circuit to ground.
Repair as necessary.
Check condenser cooling fan motor relay.
Check condenser cooling fan motor.
Check fuses in main and circuit fuse
boxes, and check short circuit to ground.
Check blower fan motor resistor referring
to Section 1A.
Check blower fan switch referring to Sec-
tion 1A.
Repair as necessary.
Check blower fan motor referring to Sec-
tion 1A.