NHTSA ID Number: 10173652
Manufacturer Communication Number: A20-029
TSB/Document Date: 2020-04-10
Summary
Service Bulletin - The transmission has intermittent harsh or jerky upshifts with steady acceleration.
Service Bulletin
April 1, 2020
20-029
Version 1
9-Speed A/T Hard Upshift with Steady Acceleration
AFFECTED VEHICLES
Year
Model
VIN Range
2019
Passport
ALL
ALL
2019
Pilot
Touring and Elite
ALL
SYMPTOM
The transmission has intermittent harsh or jerky upshifts with steady acceleration.
POSSIBLE CAUSES
There are abnormal TCM adaptation values in the TCM software.
NOTE
Make sure the vehicle has at least 500 miles on the odometer because it takes that long for the TCM to adapt to the
customer's driving pattern.
CORRECTIVE ACTION
Update the TCM.
NOTES
•
This software update repairs intermittent harsh or jerky shifts with steady acceleration. For any other symptoms,
continue with normal system troubleshooting.
•
Have the service manager or service advisor explain to the customer that after the TCM update, it will take about
500 miles for the TCM to adapt to the customer's driving pattern.
CUSTOMER INFORMATION:The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume
this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an
authorized Honda
automobile dealer.
©
2020 American Honda Motor Co., Inc. — All Rights Reserved
Page 1 of 3
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
1255D0
Update the TCM
software.
0.2 hr
03214
03217
A20029A
28103-5NZ-A00
Skill Level: Repair Technician
SOFTWARE INFORMATION
NOTE
Unnecessary or incorrect repairs resulting from a failure to update the diagnostic and reprogramming software are not
covered under warranty.
Before beginning the repair, make sure all diagnostic and reprogramming software are updated as listed.
i-HDS Software Version
1.005.048 or later
HDS Software Version
3.103.048 or later
J2534 Rewrite Software Information
PC Application Version
1.2.1.1 or later
Database Update
18-MAR-2020 or later
NoticeDB Version
18-MAR-2020 or later
Update only the systems and software listed in this service bulletin.
Do not use the MongoosePRO VCI for this service bulletin as it is not an American Honda-approved device.
For more information about updating vehicle systems, refer to service bulletin 01-023, Updating Control Units/Modules.
Year/Model
Vehicle System
Program ID (or later)
2019 Passport 2WD
TCM
28101-5EY-A600
2019 Passport AWD
TCM
28101-5EZ-A600
2019 Pilot Touring 2WD
TCM
28101-5EY-A500
2019 Pilot Touring and Elite AWD
TCM
28101-5EZ-A500
Page 2 of 3
REPAIR PROCEDURE
NOTES
•
Make sure the 12-volt battery is fully charged before starting an update.
•
Connect a fully charged jumper battery to the vehicle, and leave it connected during the entire procedure to maintain
steady voltage.
•
Do not use the GR8 because the vehicle requires a steady electrical current.
•
Control module failure caused by the improper completion of a software update (early key cycle, low battery voltage,
disconnected DLC cable, etc.) is not covered by warranty.
•
If an error occurs during the update or the i-HDS freezes, do not disconnect the battery or turn the ignition to
OFF. Reboot the i-HDS, and start over.
•
To prevent control unit damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power
windows, door locks, etc.) during the update.
•
Warranty reimbursement for technician labor is not allowed for routine checking/installation of any available
software update.
1. Verify the customer concerns for the intermittent harsh or jerky upshift with steady acceleration.
NOTE
This service bulletin does not apply to vehicles with a hard downshift or hard upshift using the paddle shifters or
vehicles with under 500 miles on the odometer, Follow normal system troubleshooting.
2. Update the TCM software using the J2534 Rewrite software with the DST-i. Refer to service bulletin 01-023,
Updating Control Units/Modules.
NOTE
Have the service manager or service advisor explain to the customer that after the TCM update, it will take about
500 miles for the TCM to adapt to the customer's driving pattern.
END
Page 3 of 3
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TSB/Document ID: A20-029
Replacement Service Bulletin Number:
MFR Communication Date: 2020-04-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
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