Tundra 4WD V6-3.4L (5VZ-FE) (2004)
11. Double cab: INSPECT AIR INLET INDICATOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal A14 and negative (-) lead to A1O.
(b) Push the air inlet button in and check that the air inlet indicator lights up.
If operation is not as specified, replace the integration circuit.