Diagnosis; Diagnosis Table; Wiring Circuit - Suzuki RA410 Manual

DIAGNOSIS TABLE

Trouble
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 or lever
position disagree with air
outlet port.

WIRING CIRCUIT

DIAGNOSIS

Possible Cause
Blower fuse blown
Blower motor 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 core leaking or clogged
Heater hoses leaking or clogged
Thermostat faulty
Control cables broken or binding
Air damper broken
Air ducts clogged
Air damper broken
Air ducts leaking or clogged
TO ECM
(Idl up signal)
HEATER AND VENTILATION 1A-5
Remedy
Check for short to ground and replace
fuse.
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 core.
Replace hoses.
Check thermostat.
Check cable.
Check control lever.
Check and adjustment.
Repair damper.
Repair air ducts.
1. Blower motor
2. Blower motor resister
3. Blower fan switch
4. Ignition switch
5. Lighting switch