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Nissan Sentra B18 (2020-2025) Service Manual: Water Outlet and Water Control Valve

Exploded View

Exploded View

1.

Water hose

2.

Clamp

3.

Water control valve

4.

O-ring

5.

Water outlet

6.

Clamp

7.

Water hose

8.

Engine coolant temperature sensor

9.

Clamp

10.

Heater hose

A.

To heater core. Refer to Exploded View.

B.

Refer to Removal and Installation.

C.

To radiator hose (upper). Refer to Exploded View.

D.

To CVT oil warmer (CVT models only). Refer to Exploded View.

    

Removal and Installation

Removal and Installation

REMOVAL

Drain coolant. Refer to Draining.

CAUTION:

Be sure to perform this operation when coolant temperature is cold.

Remove the battery and battery tray. Refer to Removal and Installation (Battery).

Disconnect the harness connector from the engine coolant temperature sensor.

Remove engine coolant temperature sensor from the water outlet (if necessary).

CAUTION:

Do not reuse engine coolant temperature sensor.

Remove the radiator hose (upper) from the water outlet. Refer to Exploded View.

Remove the electronic throttle control actuator water hose from the water outlet.

Remove CVT water hose from water outlet (CVT models only).

Remove heater hose from water outlet.

Remove EGR cooler water hose from water outlet.

Remove bolts and remove water outlet.

CAUTION:

Do not reuse water outlet.

Remove water control valve from cylinder head.

CAUTION:

Do not reuse rubber ring.

INSPECTION AFTER REMOVAL

  • Place a thread so that it is caught in the valves of the water control valve. Immerse fully in a container filled with water. Heat while stirring.

  • The valve opening temperature is the temperature at which the valve opens and the water control valve falls from the thread.

  • Continue heating. Check the full-open lift amount.

    Note:

    The full-open lift amount standard temperature for the water control valve is the reference value.

  • After checking the full-open lift amount, lower the water temperature and check valve closing temperature.

    Water Control Valve

    Standard Values

    Valve opening temperature

    Refer to Water Control Valve.

    Full-open lift amount

    Refer to Water Control Valve.

    Valve closing temperature

    Refer to Water Control Valve.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

  • Do not reuse rubber ring or water outlet.

  • Do not reuse engine coolant temperature sensor (if removed).

  • Ensure rubber ring (1) is seated properly around control valve flange (A).

  • Install water control valve with circle mark (B) facing up and the frame center part within range (A).

  • After installation, refill engine coolant. Refer to Refilling.

Inspection

Inspection

Start the engine.

Check the joints for coolant leaks. Refer to Inspection

    Water Pump Housing
    Exploded View Exploded View 1. Water inlet 2. Thermostat assembly 3. Water pump housing 4. Water pump housing gasket 5. Water pump 6. Water pump gasket 7. O-ring A. Refer to Rem...
    Thermostat
    Exploded View Exploded View 1. Water inlet 2. Thermostat assembly 3. Water pump housing 4. Water pump housing gasket 5. Water pump 6. Water pump gasket 7. O-ring A. Refer to Rem...

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