Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: Initialization

INITIALIZATION

1. ZERO POINT CALIBRATION

NOTICE:

Make sure that the front passenger seat is not occupied before performing the operation.

HINT:

Perform the zero point calibration and sensitivity check if any of the following conditions apply.

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

(a) Zero point calibration and sensitivity check procedures

HINT:

Make sure that the zero point calibration has finished normally, and then perform the sensitivity check.

(1) Adjust the seat position in accordance with the table below.

Adjustment Item

Position

Slide Direction

Rearmost position

Reclining Angle

Upright position

Headrest Height

Lowest position

Lifter Height

Lowest position

(2) Connect the Techstream to the DLC3.

(3) Turn the ignition switch to the ON position.

(4) Perform the zero point calibration by following the prompts on the Techstream screen.

HINT:

Refer to the Techstream operator's manual for further details.

OK:

"Zero Point Calibration is complete." is displayed.

(5) Perform the sensitivity check by following the prompts on the Techstream screen.

(6) Confirm that the beginning sensor reading is within the standard range.

Standard range:

-3.2 to 3.2 kg (-7 to 7 lb)

(7) Place a 30 kg (66.1 lb) weight onto the front passenger seat.

NOTICE:

  • Do not allow the weight to come into contact with the seatback when placing it on the seat cushion.
  • Place the weight in the area shown in the illustration.
Text in Illustration

*1

Weight Position

(8) Confirm that the sensitivity is within the standard range.

Standard range:

27 to 33 kg (59.52 to 72.75 lb)

HINT:

  • When performing the sensitivity check, use a solid metal weight (the check result may not be accurate if a liquid weight is used).
  • If the sensitivity deviates from the standard range, retighten the bolts of the front passenger seat taking care not to deform the seat rail. After performing this procedure, if the sensitivity is not within the standard range, replace the front seat with adjuster frame assembly RH.
  • If the zero point calibration has not finished normally, replace the front seat with adjuster frame assembly RH.
How To Proceed With Troubleshooting
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS ...

System Description
SYSTEM DESCRIPTION 1. FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM (a) General Description (1) The front passenger occupant detection ECU determines whether the front passenger seat is occupied ...

Other materials:

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS Click here (a) Confirm problem s ...

Check Mode Procedure
CHECK MODE PROCEDURE 1. DESCRIPTION (a) Check mode has a higher sensitivity to malfunctions and can detect malfunctions that normal mode cannot detect. Check mode can also detect all the malfunctions that normal mode can detect. In check mode, DTCs are detected with 1 trip detection logic. ...

Four-wheel drive system
Use the front-wheel drive control switch to select the following transfer modes. H2 (high speed position, two-wheel drive) Use this for normal driving on dry hard-surfaced roads. This position gives greater economy, quietest ride and least wear. H4 (high speed position, four-wheel drive) ...

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