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...
Other information:
Nissan Murano (Z52) 2015-2024 Service Manual: B260a Ignition Relay
DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC Detection Condition B260A IGNITION RELAY (Ignition relay) Diagnosis condition When ignition switch ON. Signal (terminal) — Threshold — Diagnosis delay time 2 seconds or more POSSIBLE CAUSE Harness or connectors BCM IPDM E/R FAIL SAFE— DTC Confirmation Procedure PERFORM DTC CONFIRMATION PROCEDURE CONSULT Ignition switch ON under the following conditions and wait for at least 2 seconds: CVT selector lever is in the P (park) or N (neutral) position...
Nissan Murano (Z52) 2015-2024 Owners Manual: Warning lights
For additional information, refer to “Vehicle information display” in this section. Anti-lock Braking System (ABS) warning light or Whenthe ignition switch is placed in theON position, the ABS warning light illuminates and then turns off. This indicates the ABS is operational...
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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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