Toyota Tacoma (2015-2018) Service Manual: Initialization

Toyota Tacoma (2015-2018) Service Manual / Supplemental Restraint Systems / Occupant Classification System / 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:

Route cannot be Calculated
PROCEDURE 1. SET DESTINATION (a) Set another destination and check if the system can calculate the route correctly. OK: Route can be correctly calculated. OK NORMAL OPERATION NG PROCEED TO NEXT SUSPECTED AREA SHOWN ...

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each sy ...

Torque Converter And Drive Plate
Inspection INSPECTION PROCEDURE 1. INSPECT TORQUE CONVERTER ASSEMBLY (a) Inspect the one-way clutch. (1) Press on the spline of the stator with a finger and rotate the spline. Check that the spline rotates smoothly when turned clockwise and rotates with difficulty when turned counterclock ...