Hyundai Santa Cruz: Cooling System / Troubleshooting

- Engine Overheat Troubleshooting

	Inspection	Remedy
Visual inspection	Inspect for shortage of coolant in reservoir tank.	Reinspect after replenishing coolant.
	Inspect for coolant pollution after removing reservoir tank cap.	Reinspect after replacing coolant.
	• Be careful when removing reservoir tank cap from overheated vehicle.

Inspect for leakage and loose coolant hoses.
(radiator hose, heater hose, oil cooler hose, etc.).
Reinspect for leakage after reinstalling hoses and clamps.

Checking for coolant leaks of integrated thermal management module (ITM).
Replace O-ring or replace the integrated thermal management module (ITM) if required.

Inspecting the heater pipe connection to find coolant leaks.
Reinspect for leakage after reinstalling hoses and clamps.

Inspect for leakage on water inlet fitting mounting part.
Reinspect for leakage after replacing O-ring.

Reinspect for leakage after tightening to the specified torque.

Inspect drive belt (for normal operation of water pump).
Adjust drive belt tension or replace.

Inspect for leakage on water pump gasket mounting part.
Reinspect for leakage after replacing gasket.

Reinspect for leakage after tightening to the specified torque.

Inspect for loose coolant temperature sensor, cooling fan connector and pin.
Reinstall loose connector.

Replace relevant part if connector pin is damaged.

Inspect operation status of cooling fan.
- Check operation status by switching ON/OFF the heater control A/C.
Check mounting status of ground cable.

• Will not operate in cold ambient temperature.

Diagnostic device
Inspect self-diagnostic code using diagnostic tool.
Check coolant temperature sensor, wiring, connector, etc.

Unit inspection
Inspect water pump impeller.
Replace water pump.