Diagnosis; Diagnosis Table; Wiring Circuit - Suzuki Jimny Service Manual

Diagnosis Table

Condition
Heater blower won't
work even when its
switch is ON.
Incorrect temperature
output.
When mode control
lever is changed, air
outlet port is not
changed.

Wiring Circuit

1. Heater motor
2. Fuse box

Diagnosis

Possible Cause
Blower fuse blown
Blower resistor faulty
Blower fan switch faulty
Blower motor faulty
Wiring or grounding faulty
Control cables broken or binding
Temperature control lever faulty
Control cable clamp position is faulty
Air damper broken
Air ducts clogged
Heater radiator leaking or clogged
Heater hoses leaking or clogged
Control cable broken or binding
Mode control lever faulty
Control cable clamp position is faulty
Air damper broken
Air ducts leaking on clogged
3. Heater blower motor switch
4. Heater resister
Replace fuse to check for short.
Check resistor.
Check blower fan switch.
Replace motor.
Repair as necessary.
Check cables.
Check control lever.
Check and adjustment.
Repair damper.
Repair air ducts.
Replace radiator.
Replace hoses.
Check cable.
Check control lever.
Check and adjustment.
Repair damper.
Repair air ducts.
5. To ECM
6. To combination switch
HEATER AND VENTILATION 1A-3
Correction
7. To 4WD controller or A/C controller
(if equipped)