Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GMQP
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 11/2022]
Title: 2ZR-FAE (EMISSION CONTROL): PCV VALVE: INSPECTION; 2020 - 2023 MY Corolla [01/2019 - 11/2022]

INSPECTION

PROCEDURE

1. INSPECT PCV VALVE (VENTILATION VALVE SUB-ASSEMBLY)

(a) Install a clean hose to the PCV valve (ventilation valve sub-assembly).

(b) Check the PCV valve (ventilation valve sub-assembly) operation.

(1) Blow air into the No. 1 ventilation case side, and check that air passes through easily.

*a

Hose

*b

Air

No. 1 Ventilation Case Side

CAUTION:

Do not suck air through the valve.

Petroleum substances inside the valve are hazardous to your health.

If the result is not as specified, replace the PCV valve (ventilation valve sub-assembly).

(2) Blow air into the intake manifold side, and check that air passes through with difficulty.

*a

Hose

*b

Air

Intake Manifold Side

CAUTION:

Do not suck air through the valve.

Petroleum substances inside the valve are hazardous to your health.

If the result is not as specified, replace the PCV valve (ventilation valve sub-assembly).

(c) Remove the hose from the PCV valve (ventilation valve sub-assembly).