Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GYJI
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 11/2022]
Title: 2ZR-FAE (ENGINE CONTROL): CONTINUOUSLY VARIABLE VALVE LIFT CONTROLLER: ON-VEHICLE INSPECTION; 2020 - 2023 MY Corolla [01/2019 - 11/2022]

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT CONTINUOUSLY VARIABLE VALVE LIFT CONTROLLER ASSEMBLY

(a) Connect the Techstream to the DLC3.

(b) Start the engine and warm it up until the engine coolant temperature stabilizes. (Engine coolant temperature 40°C (104°F) or higher)

(c) Turn the ignition switch off.

(d) Restart the engine.

HINT:

Do not operate the accelerator pedal.

(e) Turn the Techstream on.

(f) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VALVEMATIC(ENG ON) / Data List / MAP, VALVEMATIC Target Angle, VALVEMATIC Current Angle, VALVEMATIC bef Warm Up.

Powertrain > Engine and ECT > Active Test

Active Test Display

Activate the VALVEMATIC(ENG ON)

Data List Display

MAP

VALVEMATIC Target Angle

VALVEMATIC Current Angle

VALVEMATIC bef Warm Up

(g) Check the Data List "VALVEMATIC bef Warm Up" display is "ON".

HINT:

If "VALVEMATIC bef Warm Up" is not "ON".

  • Restart the engine. (Do not operate the accelerator pedal.)
  • Perform the Active Test "Activate the VALVEMATIC before Warm Up" to set "VALVEMATIC bef Warm Up" to "ON". (Do not operate the accelerator pedal.)

(h) Set the Active Test "Activate the VALVEMATIC(ENG ON)" to "High" and check that "VALVEMATIC Current Angle" follows "VALVEMATIC Target Angle" and the "MAP" value changes.

Standard:

Techstream Operation

Result

High

VALVEMATIC Current Angle: 260 deg(CA)

MAP: 25 to 40 kPa (188 to 300 mmHg)

(i) Set the Active Test "Activate the VALVEMATIC(ENG ON)" to "OFF", and check that "VALVEMATIC bef Warm Up" returns to "ON".

(j) Set the Active Test "Activate the VALVEMATIC(ENG ON)" to "Low" and check that "VALVEMATIC Current Angle" follows "VALVEMATIC Target Angle" and the "MAP" value changes.

Standard:

Techstream Operation

Result

Low

VALVEMATIC Current Angle: 106 deg(CA)

MAP: 35 to 65 kPa (263 to 488 mmHg)

OK:

When performing the Active Test, "VALVEMATIC Current Angle" follows "VALVEMATIC Target Angle" and the "MAP" value changes.

HINT:

  • After the accelerator pedal is depressed and the Active Test operates once to "Low", "VALVEMATIC bef Warm Up" does not return to "ON". Therefore, in order to repeat the inspection, it is necessary to either perform the Active Test "Activate the VALVEMATIC before Warm Up" to set the VALVEMATIC system to the operating position that occurs before the engine is warmed up, or restart the engine.
  • When the vehicle is driven while there is a malfunction in the VALVEMATIC system and the valve lift amount is fixed at the minimum, the vehicle speed cannot exceed 30 to 60 km/h (19 to 37 mph).
  • If the intake valve advance angle is within the VALVEMATIC operation prohibition range depending on the operating state of the VVT system, the Active Test "Activate the VALVEMATIC(ENG ON)" is prohibited. If the advance angle cannot be detected due to a malfunction in the VVT system, the Active Test "Activate the VALVEMATIC(ENG ON)" is prohibited.