Nissan Sentra B18 (2020-2025) Service Manual: Positive Crankcase Ventilation
Positive Crankcase Ventilation : Periodic Maintenance
Start engine and let it idle.
Replace PCV valve from the rocker cover. Refer to Removal and Installation.
Connect PCV valve to PCV hose.
Block and unblock the air hole of PCV
valve and check if a hissing noise can be heard from the air
hole. 
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace PCV valve. Refer to Removal and Installation.
Evap Canister
Evap Canister : Periodic Maintenance
EVAP CANISTER : Periodic Maintenance
CAUTION:
Do not use compressed air or a high pressure
pump.
Do not ...
Other materials:
Parking Brake Switch Signal Circuit
Component Function Check
Component Function
Check
CHECK COMBINATION METER INPUT SIGNAL
CONSULT
Select “PKB SW” in “Data Monitor” mode of “METER/M&A”.
Check tha ...
Tire Pressure Display
System Description
System Description
The adoption of this function allows tire pressure
indication in the information display of the combination meter.
Type A meter
Design
Description
...
Drive belt
Automatic tensioner pulley
Generator pulley
Water pump pulley
Air conditioner compressor pulley
Crankshaft pulley
WARNING
Ensure that the ignition switch is in the OFF or LOCK position before servicing
the drive belt. The engine may rotate unexpectedly and cause serious injury.
...
