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 | Fan assembly | |
| 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 leaking 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 |
RADIATOR: Inspection
Check radiator for mud or clogging. If necessary, clean radiator as follows.
| CAUTION | Be careful not to bend or damage radiator fins. When radiator is cleaned without removal, remove all surrounding parts in order to access the radiator core. Then tape harness and harness connectors to prevent water from entering. |
- Spray water to the back side of the radiator core using a side to side motion from the top down.
- Stop spraying when debris no longer flows from radiator.
- Blow air into the back side of radiator core using side to side motion from the top down. Use compressed air lower than 490 kPa (5 kg/cm 2 , 71 psi) and keep distance more than 30 cm (11.81 in).
- Continue to blow air until no water sprays out.
- Check for engine coolant leaks. Repair if necessary.
Scheme 1
INSPECTION AFTER INSTALLATION
- Check for engine coolant leaks. Refer to " «INSPECTION»(ref-675579-S41823567292014120500000) ".
- Start and warm up the engine. Visually inspect for engine coolant leaks. Repair as necessary.
Scheme 2
INSPECTION AFTER DISASSEMBLY
Inspect cooling fan and shroud for nicks, cracks, breaks and warping. Replace if necessary.
INSPECTION AFTER REMOVAL
- Visually check for significant dirt or rust on the water pump body and vane (A) and replace as necessary.
- Check that the vane shaft turns smoothly by hand and is not excessively loose.
- Replace the water pump assembly if the water pump does not perform properly.
Scheme 3
- Before starting engine, check oil/fluid levels, including engine coolant and engine oil. If less than required quantity, fill to the specified level. Refer to " «RECOMMENDED FLUIDS AND LUBRICANTS»(ref-675584-S23480474382014120500000) ".
- Use procedure below to check for fuel leaks.
- Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leaks at connection points.
- Start engine. With engine speed increased, check again for fuel leaks at connection points.
- Run engine to check for unusual noise and vibration. NOTE: If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after hydraulic pressure rises.
- Warm up engine thoroughly to make sure there is no leaks of fuel, exhaust gas, or any oils/fluids, including engine oil and engine coolant.
- Bleed air from passages in lines and hoses, such as in cooling system.
- After cooling down engine, again check oil/fluid levels, including engine oil and engine coolant. Refill to specified level, if necessary.
- Summary of the inspection items
| Item | Before starting engine | Engine running | After engine stopped |
|---|
| Engine coolant | Level | Leaks | Level |
| Engine oil | Level | Leaks | Level |
| Transmission/transaxle fluid | CVT Models | Leaks | Level/Leaks | Leaks |
| M/T Models | Level/Leaks | Leaks | Level/Leaks |
| Other oils and fluids (1) | Level | Leaks | Level |
| Fuel | Leaks | Leaks | Leaks |
| Exhaust gas | | Leaks | |
| (1) Power steering fluid, brake fluid, etc. |
| (1) | Power steering fluid, brake fluid, etc. |
Scheme 4
- Before starting engine, check oil/fluid levels, including engine coolant and engine oil. If less than required quantity, fill to the specified level. Refer to " «RECOMMENDED FLUIDS AND LUBRICANTS»(ref-675584-S23480474382014120500000) ".
- Use procedure below to check for fuel leaks.
- Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leaks at connection points.
- Start engine. With engine speed increased, check again for fuel leaks at connection points.
- Run engine to check for unusual noise and vibration. NOTE: If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after hydraulic pressure rises.
- Warm up engine thoroughly to make sure there is no leaks of fuel, exhaust gas, or any oils/fluids, including engine oil and engine coolant.
- Bleed air from passages in lines and hoses, such as in cooling system.
- After cooling down engine, again check oil/fluid levels, including engine oil and engine coolant. Refill to specified level, if necessary.
- Summary of the inspection items
| Item | Before starting engine | Engine running | After engine stopped |
|---|
| Engine coolant | Level | Leaks | Level |
| Engine oil | Level | Leaks | Level |
| Transmission/transaxle fluid | CVT Models | Leaks | Level/Leaks | Leaks |
| M/T Models | Level/Leaks | Leaks | Level/Leaks |
| Other oils and fluids (1) | Level | Leaks | Level |
| Fuel | Leaks | Leaks | Leaks |
| Exhaust gas | | Leaks | |
| (1) Power steering fluid, brake fluid, etc. |
| (1) | Power steering fluid, brake fluid, etc. |
Scheme 5
Scheme 6
- Before starting engine, check oil/fluid levels, including engine coolant and engine oil. If less than required quantity, fill to the specified level. Refer to " «RECOMMENDED FLUIDS AND LUBRICANTS»(ref-675584-S23480474382014120500000) ".
- Use procedure below to check for fuel leaks.
- Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leaks at connection points.
- Start engine. With engine speed increased, check again for fuel leaks at connection points.
- Run engine to check for unusual noise and vibration. NOTE: If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after hydraulic pressure rises.
- Warm up engine thoroughly to make sure there is no leaks of fuel, exhaust gas, or any oils/fluids, including engine oil and engine coolant.
- Bleed air from passages in lines and hoses, such as in cooling system.
- After cooling down engine, again check oil/fluid levels, including engine oil and engine coolant. Refill to specified level, if necessary.
- Summary of the inspection items
| Item | Before starting engine | Engine running | After engine stopped |
|---|
| Engine coolant | Level | Leaks | Level |
| Engine oil | Level | Leaks | Level |
| Transmission/transaxle fluid | CVT Models | Leaks | Level/Leaks | Leaks |
| M/T Models | Level/Leaks | Leaks | Level/Leaks |
| Other oils and fluids (1) | Level | Leaks | Level |
| Fuel | Leaks | Leaks | Leaks |
| Exhaust gas | | Leaks | |
| (1) Power steering fluid, brake fluid, etc. |
| (1) | Power steering fluid, brake fluid, etc. |
