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TECHNICAL INSTRUCTIONS

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FOR

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SPECIAL SERVICE CAMPAIGN H0Y

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CENTER AIR BAG SENSOR ASSEMBLY SOFTWARE UPDATE

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CERTAIN 2018 SEQUOIA AND 2018 TUNDRA

Toyota Certified (any classifications)
Toyota Expert (any classifications)
Master
Master Diagnostic Technicians

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The repair quality of covered vehicles is extremely important to Toyota. All dealership technicians performing
this recall are required to successfully complete the most current version of the E-Learning course “Safety
Recall and Service Campaign Essentials”. To ensure that all vehicles have the repair performed correctly;
technicians performing this recall repair are required to currently hold at least one of the following
certification levels:

I.

OPERATION FLOW CHART
Verify Vehicle Eligibility
1. Check the TIS Vehicle Inquiry
System.

Not Covered

No further action required.

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Covered

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Perform Health Check and Confirm
SRS Air Bag ECU Calibration

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Old Calibration

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New Calibration

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Reflash SRS Air Bag ECU

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Campaign complete.
Return the vehicle to the customer.

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Confirm Repair Quality

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Check the TIS Vehicle Inquiry System to confirm the VIN is involved in this Campaign, and that it has not
already been completed prior to dealer shipment or by another dealer.
TMS warranty will not reimburse dealers for repairs completed on vehicles that are not affected or were
completed by another dealer.

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II. IDENTIFICATION OF AFFECTED VEHICLES

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III. PREPARATION

A. TOOLS, SUPPLIES & EQUIPMENT

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• Standard Hand Tools
• Techstream 2.0 / TIS Techstream / Techstream Lite
• GR8 Battery Diagnostic Station
• T-SB-0134-16

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IV. BACKGROUND
The subject vehicles are voluntarily equipped with an event data recorder (EDR). The EDR only collects, stores, and
allows retrieval of vehicle event data, including crash events. It does not control the operation of the vehicle or crash
safety systems. Due to a software error in the air bag ECU where EDR data is stored, the EDR data for “Frontal
Airbag Deployment, Time to 1st Stage Deployment,” and “Frontal Airbag Deployment Time to 2nd Stage
Deployment,” will show the same value at the time an event is recorded. This software error has no effect on the
actual air bag’s deployment times for both stages. Both air bags operate as designed.

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I.

SAFETY PRECAUTIONS

CRITICAL INFORMATION - READ THOROUGHLY

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An ECU could be damaged if an error occurs in the communication while reprogramming the ECU.
Confirm all work is performed as described in these instructions.
1. STABILIZE THE POWER TO THE PERSONAL COMPUTER SIDE
a) Be sure to connect the personal computer to an external AC power
supply.
NOTE:
The ECU could be damaged if the battery voltage of the personal
computer drops while reprogramming.

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b) Exit all applications except Techstream 2.0 (TIS Techstream /
Techstream Lite).

d) DO NOT block the ventilation opening for the cooling fan of the
personal computer.
NOTE:
If the ventilation opening for the cooling fan is blocked with a
sheet cover or the like, the personal computer may be heated
excessively, causing the operation of the personal computer to
stop.
Due to the stop of the operation, the communication for
reprogramming signals could be stopped, resulting in the
damage of the ECU.

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c) Turn off the screen saver and power saving mode of the personal
computer so that the power to the hard disk is kept supplied.
NOTE:
If the screen saver or power saving mode launches while
reprogramming, the communication may be disconnected,
resulting in the damage of the ECU.

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V. AIR BAG ECU CALIBRATION ID VERIFICATION
CONFIRM THE AIR BAG ECU CALIBRATION ID
a) Perform a Health Check.
b) Confirm the current calibration ID in the SRS Air Bag ECU.
c) Referencing the table below, verify if the SRS Air Bag ECU has the updated Calibration.

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1.

SRS Air Bag ECU Calibrations

Vehicle Specification

Current CID

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Cab Type

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Model

8917F0C022

Double Cab

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CrewMax

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TUNDRA

-

8917F0C023

8917F0C032

8917F0C033

8917F0C042

8917F0C043

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SEQUOIA

New CID

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If the SRS Air Bag ECU has already been calibrated with the new calibration the campaign is
complete.

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◄ CRITICAL MESSAGE ►

1.

VEHICLE PREPERATION
a) Prior to vehicle shut down preform the following steps:

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For general reprogramming procedures, refer to T-SB-0134-16.
Confirm the latest version of Techstream software is being used.
If the Techstream does not have sufficient battery power the reflash will fail.
Confirm the DLC3 cable is in good condition before attempting reflash.
If vehicle exhibits any trouble codes or drivability symptoms, diagnose and repair using TIS
before attempting to reprogram the SRS Air Bag ECU.

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•

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• Vehicle in the IG on position.
• Transaxle in the P range.
• Parking brake engaged.
• Turn off all electrical accessories (i.e. climate control, audio system, etc.)
b) Headlight switch in the DRL OFF position.
c) Turn off the vehicle.

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VI. AIR BAG ECU REFLASH PROCEDURE

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It is critical that T-SB-0134-16 in addition to the Technical Instructions for this SSC are followed. This TSB
outlines all steps necessary to prevent reprogramming failure. Toyota will not provide reimbursement
coverage for reprogramming failures if this TSB is not followed. If you have a reprogramming failure that
requires SRS Air Bag ECU replacement and the Technical Instructions and TSB were followed correctly,
please create a case with the Technical Assistance Hotline documenting all information related to the
failure. If sufficient reporting is received related to reflash failure, there will be consideration for
reimbursement.

CONNECT THE GR8
a) Set the GR8 to Power Supply Mode to help maintain 13.5 volts during ECU reprogramming.

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2.

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• A battery charger set to power supply mode MUST be used during reprogramming.
• SRS Air Bag ECU damage may occur if the correct battery charger setting is not used.
REFLASH THE SRS AIR BAG ECU
a) Click yes on the health check results screen, or follow the links on the table above to begin the reflash
process.
NOTE:
• Reflash procedure takes about 15 minutes.
• In case reprogramming is failed EVEN ONCE, replace center airbag sensor assembly. (Refer to TIS
for instructions on SUPPLEMENTAL RESTRAINT SYSTEM / CENTER AIR BAG SENSOR ASSEMBLY)
• Reflash failure should be extremely rare and can be avoided by following all instructions and
reprogramming best practices.

4.

DISCONNECT THE GR8

5.

PERFORM A HEALTH CHECK AND CLEAR DTCs
a) Perform a health check on the vehicle.
b) Clear DTCs that have been set during the reflash procedure.
NOTE:
• Any DTC’s found have been set during the reflash procedure and are not an indication of a
malfunction. Clear any DTC’s found.
• If DTC’s cannot be cleared cycle the ignition switch 30 seconds OFF, then 30 seconds ON 3 times
then clear DTC’s.

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3.

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−
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◄ VERIFY REPAIR QUALITY ►
Confirm the ECU Calibration has been updated successfully
Confirm there are no DTCs in the Air Bag ECU
If you have any questions regarding this SSC, please contact your regional representative

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VII. APPENDIX
A. CAMPAIGN DESIGNATION DECODER

0

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Examples:
A0D = Launched in 2010, Remedy Phase, 4th Campaign Launched in 2010
C1B = Launched in 2012, Interim Phase, 2nd Campaign Launched in 2012
D0B = Launched in 2013, Remedy Phase, 1st Campaign Launched in 2013

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1st Campaign = A
2nd Campaign = B
3rd Campaign = C
4th Campaign = D
5th Campaign = E
6th Campaign = F
7th Campaign = G
8th Campaign = H
9th Campaign = I
Etc...

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0 = Remedy
1 = Interim (Remedy
not yet available) “1”
will change to “0” when
the Remedy is
available

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8 = 2008
9 = 2009
A = 2010
B = 2011
C = 2012
D = 2013
E = 2014
F = 2015
Etc...

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Current Campaign Letter
for this year

Year Campaign is Launched Repair Phase

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H

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