Troubleshooting Chart
| Symptom | Check items |
|---|
| Cooling system parts malfunction | Poor heat transfer | Water pump malfunction | Worn or loose drive belt | |
| Thermostat and water control valve stuck closed | |
| 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 | | | |
| Improper engine coolant mixture ratio | | | |
| Poor engine coolant quality | | Engine coolant viscosity | |
| Insufficient engine coolant | Engine coolant leakage | 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 leakage 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 | | |
| Blocked radiator grille | Installed car brassiere |
| Mud contamination or paper clogging |
| Blocked radiator | |
| Blocked condenser | Blocked air flow |
| Installed large fog lamp |
Scheme 1
- Check that the reservoir tank engine coolant level is within the "MIN" to "MAX" when the engine is cool.
- Adjust the engine coolant level if necessary. CAUTION: Refill Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent in its quality mixed with water (distilled or demineralized). Refer to " «RECOMMENDED FLUIDS AND LUBRICANTS»(ref-516397-S25479234352012120600000) ".
Scheme 2
- To check for leakage, apply pressure to the cooling system with the radiator cap tester (commercial service tool) (A) and the radiator cap tester adapter (commercial service tool) (B). Testing pressure: Refer to " «RADIATOR»(ref-516398-S23670404892012120600000) ".
| WARNING | Never remove radiator cap when engine is hot. Serious burns may occur from high-pressure engine coolant escaping from engine cooling system. |
| CAUTION | Higher test pressure than specified may cause radiator damage. |
Note. In a case that engine coolant decreases, replenish radiator with engine coolant.
- If anything is found, repair or replace damaged parts.
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 such as radiator cooling fan assembly and horns. Then tape harness and harness connectors to prevent water from entering. |
- Apply water by hose to the back side of the radiator core vertically downward.
- Apply water again to all radiator core surfaces once per minute.
- Stop washing if any stains no longer flow out from radiator.
- Blow air into the back side of radiator core vertically downward. Use compressed air lower than 490 kPa (4.9 bar, 5 kg/cm 2 , 71 psi) and keep distance more than 30 cm (11.81 in).
- Blow air again into all the radiator core surfaces once per minute until no water sprays out.
Scheme 3
INSPECTION AFTER INSTALLATION
- Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the radiator cap tester (commercial service tool). Refer to " «INSPECTION»(ref-516398-S11969614822012120600000) ".
- Start and warm up the engine. Check visually that there is no leakage of engine coolant.
Scheme 4
- Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the radiator cap tester (commercial service tool). Refer to " «INSPECTION»(ref-516398-S11969614822012120600000) ".
- Start and warm up the engine. Check visually that there is no leakage of engine coolant.
Scheme 5
- Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the radiator cap tester (commercial service tool). Refer to " «INSPECTION»(ref-516398-S11969614822012120600000) ".
- Start and warm up the engine. Check visually that there is no leakage of engine coolant.
Scheme 6
Scheme 7
- Drain engine coolant from radiator. Refer to " «DRAINING»(ref-516398-S08374559152012120600000) ". CAUTION: Perform this step when engine is cold.
- Remove engine cover. Refer to " «EXPLODED VIEW»(ref-516394-S32227874482012120600000) ".
- Remove battery. " «EXPLODED VIEW»(ref-516406-S08911992572012120600000) ".
- Remove air duct (upper) and air cleaner cover assembly and air cleaner body assembly.
- Disconnect radiator hose (upper). Refer to " «EXPLODED VIEW»(ref-516398-S09436481382012120600000) ".
- Remove water outlet adaptor.
- Disconnect connectors of engine harness around the battery.
- Remove bracket (2), and disconnect engine harness clip. (transmission side and water outlet side)
- Disconnect crankshaft position sensor harness connector.
- Move engine harness, and keep a service area.
- Remove water hose of each water outlet connection and heater hose.
- Remove water outlet.
- Remove engine coolant temperature sensor from water outlet, if necessary.
- Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the radiator cap tester (commercial service tool). Refer to " «INSPECTION»(ref-516398-S11969614822012120600000) ".
- Start and warm up the engine. Check visually that there is no leakage of engine coolant.
