Suzuki Wagon R Manual page 2267

6B2-4 ENGINE COOLING (M13 ENGINE)
Diagnosis Table
Condition
Engine overheats
(It is in case that radia-
tor fan operates)
Engine overheats
(It is in case that radia-
tor fan won't operates)
System Circuit Inspection
Refer to "Table B-7 Radiator Fan Control System Check" in Section 6-2
Diagnosis
Possible Cause
Loose or broken water pump belt
Not enough coolant
Faulty thermostat
Faulty water pump
Dirty or bent radiator fins
Coolant leakage on cooling system
Clogged radiator
Faulty radiator cap
Improper ignition timing
Dragging brakes
Slipping clutch
Poor charge battery
Poor generation generator
Wiring or grounding faulty
Equipped with too much electric load part(s)
Radiator cooling fan motor faulty
Fuse blown
Radiator cooling fan relay faulty
ECT sensor faulty
Radiator cooling fan motor faulty
Wiring or grounding faulty
ECM faulty
Correction
Adjust or replace.
Check coolant level and add as
necessary.
Replace.
Replace.
Clean or remedy.
Repair.
Check and replace radiator as nec-
essary.
Replace.
Adjust.
Adjust brake.
Adjust or replace.
Check and replace as necessary.
Check and repair.
Repair and necessary.
Dismount.
Check and replace as necessary.
Check 30A fuse of relay/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.