Troubleshooting Chart
| Symptom | Check items | |||
|---|---|---|---|---|
| Cooling system parts malfunction | Poor heat transfer | Water pump malfunction | Worn or loose drive belt | |
| Thermostat stuck closed | Thermostat | |||
| Damaged fins | Dust contamination or paper clogging | |||
| Physical damage | ||||
| Clogged radiator cooling tube | Excess foreign material (rust, dirt, sand, etc.) | |||
| Reduced air flow | Cooling fan does not operate | Engine cooling fans | ||
| High resistance to fan rotation | ||||
| Damaged fan blades | ||||
| Damaged radiator shroud | Radiator shroud | |||
| Improper engine coolant mixture ratio | Engine coolant viscosity | |||
| Poor engine coolant quality | Periodic maintenance | |||
| Insufficient engine coolant | Engine coolant leaks | Cooling hose | Loose clamp | |
| Cracked hose | ||||
| Water pump | Poor sealing | |||
| Radiator cap | Loose | |||
| Poor sealing | ||||
| Radiator | O-ring for damage, deterioration or improper fitting | |||
| Cracked radiator tank | ||||
| Cracked radiator core | ||||
| Reservoir tank | Cracked reservoir tank | |||
| Overflowing reservoir tank | Exhaust gas leaks into cooling system | Cylinder head deterioration | ||
| Cylinder head gasket deterioration | ||||
| Except cooling system parts malfunction | Overload on engine | Abusive driving | High engine rpm under no load | |
| Driving in low gear for extended time | ||||
| Driving at extremely high speed | ||||
| Power train system malfunction | ||||
| Installed improper size wheels and tires | ||||
| Dragging brakes | ||||
| Improper ignition timing | ||||
| Blocked or restricted air flow | Blocked bumper | Installed front bumper fascia cover | ||
| Blocked radiator grille | Mud contamination or paper clogging | |||
| Blocked radiator | Blocked air flow | |||
| Blocked condenser | ||||
| Installed large fog lamp | ||||
TROUBLESHOOTING CHART
Scheme 5
Scheme 6
Inspection
| WARNING | Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure fluid escaping from the radiator. Wrap a thick cloth around the cap. Slowly push down and turn it a quarter turn to allow built-up pressure to escape. Carefully remove the cap by pushing down and turning it all the way. |
INSPECTION AFTER REMOVAL
Inspect radiator for leaks as follows
Scheme 7
Scheme 8
- Apply pressure using suitable tool and Tool. Specified pressure value : 157 kPa (1.6 kg/cm 2 , 23 psi) Tool number : EG17650301 (J-33984-A) WARNING: To prevent the risk of the hose coming undone while under pressure, securely fasten it down with a hose clamp.
- Check for leakage.
INSPECTION AFTER INSTALLATION
- Check for leaks of engine coolant. Refer to " INSPECTION ".
- Start and warm up engine. Visually check if there is no leaks of engine coolant and CVT fluid if equipped. Refer to CVT FLUID .
Scheme 9
- Check for leaks of engine coolant. Refer to " INSPECTION ".
- Start and warm up the engine. Visually check for leaks of engine coolant.
Scheme 10
Scheme 11
- Check for leaks of engine coolant. Refer to " INSPECTION ".
- Start and warm up the engine. Visually check for engine coolant leaks.
Scheme 12
Scheme 13
- Place a thread (A) so that it is caught in the valve of the water control valve (1). Immerse fully in a container (B) filled with water. Heat while stirring.
- The valve opening temperature is the temperature at which the water control valve opens and falls from the thread.
- Continue heating. Check the full-open valve lift amount. NOTE: The full-open valve lift amount standard temperature for the water control valve is the reference value.
- After checking the full-open valve lift amount, lower the water temperature and check the valve closing temperature. WATER CONTROL VALVE SPECIFICATION Items Water control valve Valve opening temperature 93.5 - 96.5°C (200 - 206°F) Full-open valve lift amount More than 8 mm/108°C (0.315 in/226°F) Valve closing temperature 90°C (194°F)
- If out of the specification, replace water control valve.
- Check for leaks of engine coolant. Refer to " INSPECTION ".
- Start and warm up the engine. Visually check if there is no leaks of engine coolant.