Suzuki Wagon R Manual page 3910

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)
Coolant Degassing Tank
The degassing tank (1) consists of a "see-through" plastic tank, a
hose and a degassing tank cap.
During operation, inside of the degassing tank is under pressure.
As the coolant warms up and expands, the coolant level in the
degassing tank rises. On the other hand, it lowers as the coolant
cools down and contracts. When the pressure applied to the
inside of the degassing tank constantly exceeds the specified
value, the pressure is relieved through the degassing tank cap.
Therefore, cooling level should be "KALT/COLD" mark on the
degassing tank when the coolant is cold.
Diagnosis
Possible Cause
Loose or broken accessory drive belt
Not enough coolant
Faulty thermostat
Faulty water pump
Dirty or bent radiator fins
Coolant leakage on cooling system
Clogged radiator
Faulty degassing tank cap
Dragging brakes
Slipping clutch
Poor charge battery
Poor generation generator
ECT sensor faulty
ECM faulty
Wiring or grounding faulty
Equipped with too much electric load part(s)
Radiator cooling fan motor faulty
Fuse blown
Radiator cooling fan relay
ECT sensor faulty
Radiator cooling fan motor faulty
Wiring or grounding faulty
ECM faulty
ENGINE COOLING (Z10XEP AND Z12XEP ENGINES) 6B4-3
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 brake.
Adjust or replace.
Check and replace as necessary.
Check and repair.
Check and replace as necessary.
Check and replace as necessary.
Repair and necessary.
Dismount.
Check and replace as necessary.
Check 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.
Correction