Toyota Tundra Service Manual: Precaution



  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work (See page ).
  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected (See page ).


(a) Perform the zero point calibration and sensitivity check if any of the following conditions apply (see page ).

  • The occupant classification ECU is replaced.
  • Accessories (seatback tray and seat cover, etc.) are installed.
  • The front seat RH is removed from the vehicle.
  • The passenger airbag ON/OFF indicator (OFF) comes on when the front seat RH is not occupied.
  • An occupant classification sensor collision detection DTC is output due to an accident or a collision.


When a vehicle that has been in an accident is brought into the workshop for repair, check the flatness of the floor where the front seat RH is mounted. If the flatness is not within +/-3.0 mm (0.118 in.), adjust it to the specified range.

    Parts Location

    Problem Symptoms Table

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