OPERATION CHECK 1. CHECK FRONT POWER SEAT FUNCTION ![]() (a) Check the basic functions. (1) Operate the power seat switches and check to make sure each seat function works:
2. CHECK POWER SEAT MOTOR ASSEMBLY (SLIDING, FRONT VERTICAL, LIFTER, RECLINING AND LUMBAR SUPPORT) (a) Check the PTC operation inside the power seat motor. HINT: The PTC thermistor's resistance increases when the power seat switch is held down even after the power seat has been moved to the maximum in one direction. If the resistance increases beyond a specified level, current is cut to prevent a short circuit. NOTICE:
(1) Choose a power seat function. Operate the power seat switch and move the seat as much as possible in one direction. Keep the seat in that position for approximately 60 seconds. (2) Operate the power seat switch again and continue to try to move the seat in the same direction as in the previous step. Measure the amount of time elapsed before current is automatically cut (the sound of the motor has stopped). Standard: 4 to 90 seconds (3) After current has been cut, release the power seat switch and wait for approximately 60 seconds. (4) Operate the same power seat switch and move the seat in the opposite direction. Check that the motor operates. |
Toyota Tundra Service Manual > Sfi System: Secondary Air Injection System Switching Valve "A" Circuit (P0412,P0415)
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 ...