Variable Valve Timing (VVT) System Operation

WARNING: This page is about a different car, the 2002 Lexus SC 430, 2002 Lexus LS 430, 2002 Lexus IS 300, 2002 Lexus GS 430, and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

If VVT system circuits or components are faulty, a Diagnostic Trouble Code (DTC) should set. Retrieve DTCs and perform appropriate diagnostic test. See appropriate SELF-DIAGNOSTICS article. For testing GS300, seeDTC P1346: VARIABLE VALVE TIMING (VVT) CIRCUIT RANGE PERFORMANCE/FAULT and DTC P1349: VARIABLE VALVE TIMING (VVT) SYSTEM MALFUNCTION in SELF-DIAGNOSIS - GS300 article. For testing GS430, see DTC P1345 OR P1350: VARIABLE VALVE TIMING (VVT) CIRCUIT MALFUNCTION , DTC P1346 OR P1351: VARIABLE VALVE TIMING (VVT) and DTC P1349 OR P1354: VARIABLE VALVE TIMING (VVT) in SELF-DIAGNOSIS - GS430 article. For testing IS300, see DTC P1346: VARIABLE VALVE TIMING (VVT) CIRCUIT RANGE/PERFORMANCE FAULT and DTC P1349: VARIABLE VALVE TIMING (VVT) SYSTEM MALFUNCTION in SELF-DIAGNOSIS - IS300 article. For testing LS430, see DTC P1345 OR DTC P1350: VARIABLE VALVE TIMING (VVT) CIRCUIT MALFUNCTION , DTC P1346 OR DTC P1351: VARIABLE VALVE TIMING (VVT) and DTC P1349 OR DTC P1354: VARIABLE VALVE TIMING (VVT) in SELF-DIAGNOSIS - LS430 article. For testing SC430, see DTC P1345 OR DTC P1350: VARIABLE VALVE TIMING CIRCUIT MALFUNCTION , DTC P1346 OR DTC P1351: VARIABLE VALVE TIMING (VVT) and DTC P1349 OR DTC P1354: VARIABLE VALVE TIMING (VVT) in SELF-DIAGNOSIS - SC430 article.