Circuit Description
WARNING: This page is about a different car, the 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Variable Valve Timing (VVT) sensor is also known as camshaft position sensor.
The Variable Valve Timing (VVT) system controls intake valve timing in response to driving conditions. Electronic Control Module (ECM) controls Oil Control Valve (OCV) to ensure correct valve timing. A OCV is located in each cylinder head at flywheel end of engine. Oil pressure controlled by OCV is supplied to VVT controller. VVT controller then changes relative position between camshaft and crankshaft. VVT controller is located on front of each intake camshaft. DTC P1349 is set if ECM detects valve timing does not change (fixed timing) for bank No. 1 (left cylinder head). DTC P1354 is set if ECM detects valve timing does not change for bank No. 2 (right cylinder head). Possible causes are:
- Incorrect valve timing.
- Faulty oil control valve.
- Faulty VVT controller assembly.
- Faulty ECM.