On-Vehicle Inspection [11/2021 - ]: Procedure

WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY

Check Rotation Direction Signal:

According to the display on the GTS, read the Data List.

Powertrain > Engine > Data List

Tester Display
VVT-iE Motor Direction Bank 1

Specified Condition

GTS Display	Condition	Specified Condition
VVT-iE Motor Direction Bank1	Ignition switch off → Ignition switch ON	Backward

If the result is not as specified, inspect the cam timing control motor with EDU assembly and wire harness.

Check VVT Change Angle:

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility

Tester Display
Inspection Mode

Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

Read the Data List while performing the Active Test with the engine idling.

Powertrain > Engine > Active Test

Active Test Display
Control the VVT-iE Opening Angle Bank 1

Data List Display
Intake VVT Change Angle Bank 1
Intake VVT Target Angle Bank 1

Specified Condition

Active Test Movement Order	Difference between "Intake VVT Change Angle Bank 1" and "Intake VVT Target Angle Bank 1"
0 deg → 10 deg → 20 deg → 40 deg → 0 deg → 10 deg → END	Within 4 DegFR

If the result is not as specified, inspect the cam timing control motor with EDU assembly and camshaft timing gear assembly.