Nissan Murano: System Description / Overheating Cause Analysis
Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Cooling System :: Vq35de / System Description / Overheating Cause Analysis
| Symptom | Check items | |||
|---|---|---|---|---|
| Cooling system parts malfunction | Poor heat transfer | Water pump malfunction | Worn or loose drive belt | Engine coolant circulation |
| Thermostat stuck closed | Thermostat | |||
| Damaged radiator fins | Dust contamination or paper clogging | — | ||
| Physical damage | ||||
| Clogged radiator cooling tube | Excess foreign material (rust, dirt, sand, etc.) | |||
| Reduced air flow | Cooling fan motor assembly does not operate. | Cooling fan motor 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 | — | Engine coolant density | — | |
| Insufficient engine coolant | Engine coolant leaks | Radiator and heater hoses | 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 | ||||
| Coolant reservoir tank | Cracked coolant reservoir tank | |||
| Overflowing coolant 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 | ||||
| Powertrain system malfunction | — | |||
| Improper size wheels and tires installed | ||||
| Brakes dragging | ||||
| Improper ignition timing | ||||
| — | Blocked or restricted air flow | Blocked bumper | — | |
| Blocked condenser | ||||
| Blocked radiator | ||||
| Blocked radiator grille | ||||
| Car brassiere installed | ||||
| Large fog lamp installed | ||||
| Mud contamination or paper clogging | ||||
Cooling System
Cooling Circuit
1.
Cylinder block (bank 1)
2.
Oil cooler
3.
Cylinder head (bank 1)
4.
Water pump
5.
Radiator
6.
Water outlet
7...
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Autolight system
The autolight system allows the headlights to turn on and off automatically. The autolight system can:
Turn on the headlights, front parking, tail, license plate and instrument panel lights automatically when it is dark. Turn off all the lights (except daylight running lights) when it is light. Keep all the lights on for a period of time after you place the ignition switch in the OFF position and all doors are closed.
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