23TC01a

TECHNICAL INSTRUCTIONS
FOR
23TC01
TOYOTA SAFETY SENSE INOPERATIVE INTERMITTENTLY
CERTAIN
2023 MODEL YEAR bZ4X
2023 MODEL COROLLA
2023 MODEL COROLLA HATCHBACK
2023 MODEL COROLLA HYBRID
2023 MODEL COROLLA CROSS
I.
OPERATION FLOW CHART
The flow chart is for reference only. DO NOT use it in place of the full technical instructions. Follow ALL
steps as outlined in the full technical instructions to confirm the campaign is completed correctly.
Verify Vehicle Eligibility
1. Confirm vehicle VIN matches the RO.
2. Check for Campaign eligibility using TIS.
Not Covered
No further action required.
Covered
Perform Health Check and Verify ECU
Calibration.
Old Calibration
Reflash the forward recognition camera
with the NEW software.
New Calibration
Campaign completed.
Return the Vehicle to the customer.
II. IDENTIFICATION OF AFFECTED VEHICLES
1.
CHECK VEHICLE FOR CAMPAIGN ELIGIBILITY
a) Compare the vehicles VIN to the VIN listed on the Repair Order to ensure they match.
b) Check the TIS Vehicle Inquiry System to confirm the VIN is involved in this Campaign, and that it has not
already been completed.
NOTICE:
TMNA warranty will not reimburse dealers for repairs completed on vehicles that are not affected or were
previously completed, even by another dealer.
III. PREPARATION
A.
TOOLS & EQUIPMENT
• T-SB-0134-16
• T-SB-0107-20
• DCA-8000 Battery Diagnostic Station
• Techstream ADVi / Techstream 2.0 / Techstream Lite
B.
MATERIALS
• Tape (For COROLLA HYBRID and COROLLA CROSS HYBRID)
IV. BACKGROUND
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V. SAFETY PRECAUTIONS
CRITICAL INFORMATION - READ THOROUGHLY
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.
NOTICE:
The ECU could be damaged if the battery voltage of the personal
computer drops while reprogramming.
b)
Turn off the screen saver and power saving mode of the personal
computer so that the power to the hard disk is kept supplied.
NOTICE:
If the screen saver or power saving mode launches while
reprogramming, the communication may be disconnected, resulting in
the damage of the ECU.
c)
DO NOT block the ventilation opening for the cooling fan of the
personal computer.
NOTICE:
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.
VI. FRONT RECOGNITION CAMERA SYSTEM CALIBRATION ID VERIFICATION
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1.
CHECK FOR DTC’S
a) Using a Techstream, perform a Health Check to check for any
Diagnostic Trouble Codes.
NOTICE:
This Campaign covers only the software update to the Front
Recognition Camera System, as detailed in these instructions. It does
not cover the diagnosis or replacement of any other systems on the
vehicle.
2.
CHECK CURRENT CALIBRATION
a) Locate the Update column for the Front Recognition Camera System in the Stored Data tab for this
vehicle.
b) Determine the status of an available update; indicated by a YES or NO.
HINT:
If the CID’s indicate ‘Yes’, proceed with the update procedure.
Yes
Proceed to section VII. Vehicle
preparation on p.4
Is there an update available for
the Front Recognition Camera
System?
No
Campaign complete. Return the
vehicle to the customer.
◄ CRITICAL MESSAGE ►
It is critical that T-SB-0134-16 and T-SB-0107-20 in addition to the Technical Instructions for this Recall [or LSC/CSC]
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 forward recognition camera 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 re-flash failure, there will be consideration for reimbursement.
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VII. VEHICLE PREPARATION
1.
•
•
•
VEHICLE PREPARATION
a) Confirm the following conditions:
Vehicle in the IG position (for HEV
and BEV Model: READY OFF, for
Gasoline Model: engine OFF).
Transaxle in Park.
Parking brake engaged.
•
•
•
Turn off all electrical accessories (i.e. climate control, audio
system, etc.)
Headlight switch in the DRL OFF position. (w/ DRL OFF
position)
Windshield wiper switch in the OFF position.
b)
When the vehicle has no “OFF position” in the light control
switch:
1) Turn the IG ON.
2) Set the light control switch to the AUTO position and make sure
that the exterior lights are turned on.
3) Light up the automatic light control sensor with work light to
keep the exterior lights turned off.
2.
STOP THE OPERATION OF THE COOLING FAN
(For COROLLA HYBRID and COROLLA CROSS HYBRID)
a) Disconnect the 2 connectors from the cooling fan on the radiator
fan shroud.
b) Cover the disconnected 2 connectors with tape, etc. to prevent
foreign material or water, etc. from adhering.
If the cooling fan runs during the Calibration
update procedure, the battery voltage will be
inconsistent and could cause damage to the
control module(s).
3.
CONNECT THE 12V BATTERY TO A POWER SUPPLY
a) Connect the DCA-8000 or other type of a power supply (not a battery charger) to the 12 V battery.
b) Tap the Reflash icon from the Main Menu screen of the DCA-8000.
A power supply MUST be used during reprogramming. ECU damage will occur if the battery
voltage is not properly maintained during this re-flash procedure.
NOTICE:
A power supply must be connected directly to the 12V battery terminals and NOT the remote jump posts under
the hood (if equipped).
4.
VERIFY TECHSTREAM SETUP
a) Verify that the Techstream meets the following conditions:
• The latest version of software is loaded.
• The Techstream battery is fully charged. If not, connect the Techstream to a 120 V source.
• The DLCIII cable is in good condition.
The Techstream’s battery voltage must also be maintained during the re-flash procedure. If
necessary, plug the Techstream into a 120 v outlet during this procedure.
NOTICE:
If the Techstream communication with the vehicle fails during the re-flash procedure, the forward recognition
camera will be damaged.
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VIII.
1.
UPDATE CALIBRATION
CONFIRM THE ECU CALIBRATION ID
a) Confirm the current calibration ID in the Front Recognition Camera System.
The calibration IDs to re-flash in this campaign are as shown in the table below.
NOTE: These are large files, Please see file size below:
Front Recognition Camera Calibrations
System
Model
File Size
8646F4206200
8646F4206400
251MB
8646F4206300
8646F4206400
250MB
COROLLA
COROLLA HATCHBACK
COROLLA HYBRID
8646F1204300
8646F1204500
250MB
8646F1204400
8646F1204500
250MB
COROLLA CROSS
8646F1606200
8646F1606300
250MB
bZ4X
Front
Recognition
Camera
Front Recognition Camera Calibration ID
Current Calibration ID
New Calibration ID
2.
REFLASH THE FORWARD RECOGNITION CAMERA
a) Click yes on the health check results screen or follow the links on the table above to begin the reflash
process.
NOTICE:
Reflash failure should be extremely rare and can be avoided by following all instructions and reprogramming
best practices.
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IX. COMPLETE REPAIR
1.
2.
DISCONNECT THE DCA-8000
RECONNECT COOLING FAN (For COROLLA HYBRID and
COROLLA CROSS HYBRID)
a) Peel off the covering tape, etc.
b) Reconnect the 2 connectors to the cooling fan on the radiator fan
shroud.
If you fail to reconnect fans a DTC may not
set, ensure this is performed prior to the
vehicle leaving.
5.
3.
CHECK THE OPERATION OF THE COOLING FAN
(For COROLLA HYBRID and COROLLA CROSS HYBRID)
a) Turn the READY ON.
b) Turn the air conditioner ON to check if the cooling fan operates.
4.
PERFORM VERIFICATION HEALTH CHECK
a) Using a Techstream, perform a Health Check.
b) Clear DTC’s that may have set during the re-flash procedure.
c) Re-run the Health Check to confirm that no DTC’s reappear.
THIS VERIFICATION HEALTH CHECK IS
NECESSARY to update the results and CID’s
to the National database.
CONFIRM CID UPDATE
a) On the Stored Data tab, confirm the following for the Front Recognition Camera System:
• The Calibration number has the “New CID” number.
• The Update column lists “No”
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Confirm the CID's has been updated successfully to the NEW CID's by someone other than the
individual who performed the repair. Refer to p.5.
.
6.
PRINT CUSTOMER HEALTH CHECK REPORT
a) From the Stored Data tab, select the Customer Health Check Report button (TIS will launch when button
is pressed).
b)
c)
d)
e)
Log in to TIS.
Input Vehicle Mileage and Repair Order number.
Check the “Performed” campaign button for campaign 23TC01.
Select the Report button.
f)
g)
h)
Confirm Customer Health Check Report information is correct.
Print Customer Health Check Report from TIS.
Sign and provide to the customer.
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-
◄ VERIFY REPAIR QUALITY ►
Confirm the Front Recognition Camera Calibration has been updated to the NEW CID.
Confirm the cooling fans has been reconnected (If applicable)
Confirm there are no DTC’s after the Calibration update.
If you have any questions regarding this update, please contact your area representative.
X. APPENDIX
A.
CAMPAIGN DESIGNATION DECODER
23TC01
19
T
A
01
Year Campaign
is Launched
Vehicle Make
Field Action Category and Phase
Field Action Sequence
19 = 2019
20 = 2020
21 = 2021
22 = 2022
23 = 2023
Etc...
T = Toyota
L = Lexus
A = Safety Recall Remedy
B = Safety Recall Interim
C = Special Service Campaign
D = Limited Service Campaign
E = Customer Support Program
F = Emissions Recall
(May use other characters in unique cases)
01 = 1 st Field Action of the year
02 = 2 nd Field Action of the year
03 = 3 rd Field Action of the year
(The sequence is unique for each Field
Action category)
(May use other characters in unique
cases)
Examples:
19TA01 = Launched in 2019, Toyota, Safety Recall Remedy Phase, 1st Safety Recall Launched in 2019
20TC02 = Launched in 2020, Special Service Campaign, 2nd Special Service Campaign Launched in 2020
21TE05 = Launched in 2021, Customer Support Program, 5th Customer Support Program Launched in 2021
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