23TC06C

TECHNICAL INSTRUCTIONS
FOR
SPECIAL SERVICE CAMPAIGN 23TC06
Electronic Parking Brake (EPB) DTC C059704
Certain 2022 & 2023 Model Year Tundra
The repair quality of covered vehicles is extremely important to Toyota. All dealership technicians
performing this special service campaign 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 special service campaign repair are
required to currently have completed all of the following courses:
- T623 Toyota Electrical Circuit Diagnosis
It is the dealership’s responsibility to select technicians that have completed the above courses to perform
this repair. Carefully review your resources, the technician skill level, and ability before assigning
technicians to this repair. It is important to consider technician days off and vacation schedules to ensure
there are properly trained technicians available to perform this repair at all times.
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 RO
2. Check Vehicle Inquiry System for
campaign eligibility
Not Involved
No further action required
Involved
Perform Health Check
Is an updated available for the
Brake/EPB?
No
Yes
Update the Skid Control ECU CID
Perform verification Health Check and
clear any DTC’s
Campaign complete.
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.
NOTE:
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-0107-20 Rev.2
DCA-8000 Battery Diagnostic Station
Techstream ADVi / Techstream 2.0 / Techstream Lite
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IV. BACKGROUND
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.
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VI. BRAKE/EPB SYSTEM CALIBRATION ID VERIFICATION
1.
CHECK FOR DTC’S
a) Using a Techstream, perform a Health Check to check for any
Diagnostic Trouble Codes.
b) If you see the following DTC’s the vehicle may have experienced
this concern and may be remedied with the software update.
Brake System Control Module “A” System
C059704
Internal Failure
HINT:
This Campaign covers only the software update to the Brake/EPB
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 Brake/EPB System in the Health Check tab for this vehicle
(Click the “+” to the left of the System to expand the system menu).
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 Brake/EPB System?
No
Campaign complete. Return the
vehicle to the customer.
◄ CRITICAL MESSAGE ►
It is critical that T-SB-0107-20 Rev.2 in addition to the Technical Instructions for this Special Service Campaign 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 skid
control 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 re-flash failure, there will be consideration for reimbursement.
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VII. VEHICLE PREPERATION
1.
•
•
•
VEHICLE PREPARATION
a) Confirm the following conditions:
Vehicle in the IG position (engine off). •
Transmission 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.
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.
3.
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 120v outlet during this procedure.
NOTICE:
If the Techstream communication with the vehicle fails during the re-flash procedure, the skid control
ECU will be damaged.
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VIII.
1.
UPDATE CALIBRATION
CONFIRM THE ECU CALIBRATION ID
a) Confirm the current calibration ID in the Brake/EPB System.
The calibration IDs to re-flash in this campaign are as shown in the table below.
Model
System
TUNDRA
Brake/EPB
Brake/EPB Calibrations
Brake/EPB Calibration ID
Current Calibration ID
New Calibration ID
F15260C35100
F15260C351A0
F15260C35000
F15260C35200
F15260C38000
F15260C25100
F15260C36100
F15260C361A0
F15260C36000
F15260C36200
F15260C39000
F15260C26100
F15260C37100
F15260C371A0
F15260C37000
F15260C37200
F15260C40000
F15260C27100
2.
REFLASH THE SKID CONTROL ECU
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
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.
HINT:
If Permanent DTC is output, refer to the TIS and delete it.
3.
CONFIRM CID UPDATE
a) On the Stored Data tab, confirm the following for the Brake/EPB System:
• The Calibration number has the “New CID” number.
• The Update column lists “No”
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.
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4.
PERFORM ZERO POINT CALIBRATION OF BRAKE ACTUATOR FOR RESIDUAL FLUID (ZERO POINT
CALIBRATION OF SKID CONTROL ECU MEMORY)
a) Start the engine. The brake actuator may produce a loud operating sound when the engine starts for the
first time after reprogramming.
b) The zero point calibration is complete when the brake actuator falls silent.
HINT:
The skid control ECU stores the amount of the fluid inside the brake actuator in its memory, and such
information will be reset when the ECU is reprogrammed. If the memory is reset, the system rapidly
drains the fluid out of the brake actuator when the engine starts, and this may cause the brake actuator
to emit a loud operating sound. The zero point calibration is complete once the residual fluid is drained
out, and the operating sound returns to normal.
5.
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 23TC06.
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 system Calibration has been updated successfully.
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
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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