22TC07 Technical

TECHNICAL INSTRUCTIONS
FOR
SPECIAL SERVICE CAMPAIGN 22TC07
ENGINE ECU SOFTWARE UPDATE
CERTAIN
2020 MODEL YEAR COROLLA VEHICLES
The repair quality of covered vehicles is extremely important to Toyota. All dealership technicians performing
this repair 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 repair are required to currently have completed all of the following courses:
•
T623 Toyota Electrical Circuit Diagnosis
Always check which technicians can perform the repair by logging on to https://www.uotdealerreports.com. It is
the dealership’s responsibility to select technicians with the above certification level or greater 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
No further action required
Not Covered
Covered
Perform Health Check and Verify ECU
Calibration
Old Calibration
Reflash the Engine Control Computer
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, SUPPLIES & EQUIPMENT
•
•
•
Standard Hand Tools
• DCA-8000 Battery Diagnostic Station
T-SB-0134-16
Techstream ADVi / Techstream 2.0 / Techstream Lite
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IV. BACKGROUND
Due to improper programing in the engine ECU, under certain conditions, the vehicle may stall at low speeds when
accelerating from a stop. If this low-speed vehicle stall occurs, steering and braking are not impacted, and the vehicle
can be restarted immediately.
Note: this condition may cause DTC P1603 to be present in DTC history. However, it will not cause the MIL to illuminate.
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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.
a)
STABILIZE THE POWER TO THE PERSONAL COMPUTER SIDE
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. Engine and ECT SYSTEM CALIBRATION ID VERIFICATION
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 Engine and
ECT 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 Engine and ECT system in the Stored Data tab for this vehicle.
b) Determine the status of an available update; indicated by a YES or NO.
Yes
Proceed to section VII. Vehicle
preparation on p.5
Is there an update available for
the Engine and ECT System?
No
Campaign complete. Return the
vehicle to the customer.
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◄ CRITICAL MESSAGE ►
It is critical that T-SB-0134-16 in addition to the Technical Instructions for this Special Service Campaign are followed.
T-SB-0134-16 outlines all steps necessary to prevent reprogramming failure.
VII. VEHICLE PREPARATION
1. VEHICLE PREPARATION
a) Confirm the following conditions:
• Vehicle in the IG position (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.
Windshield wiper switch in the OFF position.
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 120 V outlet during this procedure.
NOTICE:
If the Techstream communication with the vehicle fails during the re-flash procedure, the engine
control computer will be damaged.
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VIII.
UPDATE CALIBRATION
1. CONFIRM THE ECU CALIBRATION ID
a) Confirm the current calibration ID in the Engine and ECT System.
The calibration IDs to re-flash in this campaign are as shown in the table below.
Vehicle Specification
MODEL
Specification
Engine Control Computer Calibrations
CURRENT CID
NEW CID
312N6000
CVT
COROLLA
312N6200
312N6100
6F (Manual)
312N7000
312N7100
NOTICE:
If the Engine ECU has the New CID’s, no update is necessary.
2. REFLASH THE ENGINE CONTROL COMPUTER
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.
DISCONNECT THE DCA-8000
2. 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.
3. CONFIRM CID UPDATE
a) On the Stored Data tab, confirm the following for the Engine and ECT 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.6.
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4. 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 22TC07.
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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X. ATTACH THE AUTHORIZED VEHICLE MODIFICATION LABEL
a. Fill out the label.
b. Affix the label to the under-side of the hood.
1
2
3
4
5
Repair ECU P/N
Calibration ID
Dealer Code
Date Completed
Campaign Code (22TC07)
◄ VERIFY REPAIR QUALITY ►
- Confirm the system Calibration has been updated successfully
- Confirm there are no DTCs in the Engine and ECT system
- If you have any questions regarding this update, please contact your area representative.
XI. APPENDIX
A. CAMPAIGN DESIGNATION DECODER
19TA01
19
T
A
01
Year Campaign
is Launched
Vehicle Make
Field Action Category and Phase
Field Action Sequence
A = Safety Recall Remedy
B = Safety Recall Interim
C = Special Service Campaign
D = Limited Service Campaign
E = Customer Support Program
F = Emissions Recall
01 = 1st Field Action of the year
02 = 2nd Field Action of the year
03 = 3rd Field Action of the year
19 = 2019
20 = 2020
21 = 2021
22 = 2022
23 = 2023
Etc...
T = Toyota
L = Lexus
(May use other characters in unique
cases)
(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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