Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Sfi System: Catalyst System Efficiency Below Threshold Bank 1 (P042000,P043000)
MONITOR DESCRIPTION The ECM uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air fuel ratio sensor, sends pre-catalyst information to the ECM. The second sensor, the heated oxygen sensor, sends post-catalyst informat ...
Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual > Vacuum Switching Valve (for Engine Mounting): Removal
REMOVAL PROCEDURE 1. REMOVE COOL AIR INTAKE DUCT SEAL Click here 2. REMOVE INLET AIR CLEANER ASSEMBLY (a) Remove the 2 bolts and inlet air cleaner assembly from the air cleaner case sub-assembly. 3. REMOVE NO. 2 VACUUM SWITCHING VALVE ASSEMBLY (a) Disconnect the 2 vacuum hoses ...