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1F-3 Engine Cooling System:
Engine Cooling Symptom Diagnosis
Condition
Engine overheats (It is in
case that radiator fan
operates)
Engine overheats (It is in
case that radiator fan
won't operate)
Diagnostic Information and Procedures
Possible cause
Loose or broken water pump belt
Not enough coolant
Faulty thermostat
Faulty water pump
Dirty or bent radiator fins and/or A/C
condenser fins
Coolant leakage on cooling system
Clogged radiator and/or A/C condenser Check and replace radiator and/or A/C
Faulty radiator cap
Improper ignition timing
Dragging brakes
Slipping clutch
Poor charge battery
Poor generation generator
ECT sensor faulty
Radiator cooling fan relay No.2 and/or
No.3 faulty
Radiator fan motor faulty
A/C condenser cooling fan relay faulty
A/C condenser cooling fan motor faulty Check A/C condenser cooling fan motor (Refer
ECM faulty
Wiring or grounding faulty
Equipped with too much electric load
part
Equipped with too much part to bumper
air inlet
A/C system faulty
Power steering system faulty
EGR system faulty
IAC system faulty
Fuse blown
Radiator cooling fan relay No.1
ECT sensor faulty
Radiator cooling fan motor faulty
Wiring or grounding faulty
ECM faulty
Correction / Reference Item
Adjust or replace.
Check coolant level and add as necessary.
Replace.
Replace.
Clean or remedy.
Repair.
condenser as necessary.
Replace.
Adjust.
Adjust brake.
Adjust or replace.
Check and replace as necessary.
Check and repair.
Check and replace as necessary.
Check and replace as necessary.
Check and replace as necessary.
Check A/C condenser cooling fan relay (Refer
to "Generator Control Signal Circuit Check in
Section 1A").
to "Generator Control Signal Circuit Check in
Section 1A").
Check and replace as necessary.
Repair as necessary.
Dismount.
Dismount.
Check A/C system (Refer to "Idle Air Control
System Check in Section 1A").
Check power steering system (Refer to "Power
Steering (P/S) System Inspection in Section
0B").
Check EGR system (Refer to "EGR System
Inspection (Using SUZUKI Scan Tool) in
Section 1B").
Check IAC system (Refer to "Idle Air Control
System Check in Section 1A").
Check "30A" fuse in main fuse box and check
for short circuit to ground.
Check and replace as necessary.
Check and replace as necessary.
Check and replace as necessary.
Repair as necessary.
Check and replace as necessary.
S3RH0A1604001
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