ON-VEHICLE INSPECTION PROCEDURE 1. CHECK FRONT SEAT AIRBAG ASSEMBLY LH (VEHICLE NOT INVOLVED IN COLLISION) (a) Perform a diagnostic system check (see page
(b) With the front seat airbag assembly LH installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the front seat with a new one: Cuts, minute cracks or marked discoloration on the front seatback around the front seat airbag assembly LH. 2. CHECK FRONT SEAT AIRBAG ASSEMBLY LH (VEHICLE INVOLVED IN COLLISION AND AIRBAG HAS NOT DEPLOYED) (a) Perform a diagnostic system check (see page
(b) With the front seat airbag assembly LH removed from the vehicle, perform a visual check. If there are any defects as mentioned below, replace the front seat airbag assembly LH with a new one:
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Toyota Tundra Service Manual > Sfi System: Catalyst System Efficiency Below Threshold (Bank 1) (P0420,P0430)
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 (A/F) sensor, sends pre-catalyst information to the ECM. The second sensor, the Heated Oxygen (HO2) sensor, sends post-catal ...