Vehicle Identification And Serial Numbers VEHICLE IDENTIFICATION AND SERIAL NUMBERS 1. VEHICLE IDENTIFICATION NUMBER (a) The vehicle identification number is stamped on the vehicle identification number plate and certification label, as shown in the illustrations. (1) Vehicle Identification Number Plate  (2) Certification Label  (3) Frame Number  2. ENGINE SERIAL NUMBER AND TRANSMISSION SERIAL NUMBER (a) The engine serial number is stamped on the cylinder block of the engine and the transmission serial number is stamped on the housing as shown in the illustrations. (1) Engine Serial Number  (2) Transmission Serial Number  |
Toyota Tundra Service Manual > Sfi System: Secondary Air Injection System Air Flow / Pressure Sensor Circuit Range / Performance Bank1 (P2431-P2433,P2436-P2438)
DESCRIPTION The Secondary Air Injection (AIR) system consists of an air pump, the Air Switching Valve (ASV), a pressure sensor, the Air Injection Control Driver (AID) and the ECM. For a short time after a cold engine start, the AIR system pumps secondary air to the exhaust port of the cylinder head ...
