NHTSA ID Number: 10172578
Manufacturer Communication Number: B20-015
TSB/Document Date: 2020-03-18
Summary
Service Bulletin - The transmission has intermittent harsh or jerky upshifts with steady acceleration, or the MIL comes on with DTC P0716 (VNM Performance).
Service Bulletin
20-015
March 10, 2020
Version 1
9-Speed A/T Hard Upshift with Steady Acceleration or MIL On with DTC
P0716
AFFECTED VEHICLES
Year
Model
VIN Range
2019
MDX
ALL
ALL
SYMPTOM
The transmission has intermittent harsh or jerky upshifts with steady acceleration, or the MIL comes on with DTC P0716
(VNM Performance).
POSSIBLE CAUSES
Abnormal TCM adaptation values or a miscalculation in the TCM software causes the MIL to come on with DTC P0716.
NOTE
For the hard upshift concern, make sure the vehicle has at least 500 miles on the odometer because it takes that long
for the TCM to adapt to the client's driving pattern.
CORRECTIVE ACTION
Update the TCM.
NOTES
•
This software update repairs two different symptoms: Intermittent harsh or jerky shifts with steady acceleration and
the MIL coming on with DTC P0716. For any other conditions, continue with normal system troubleshooting.
•
Have the service manager or service consultant explain to the client that after the TCM update, it will take about 500
miles for the TCM to adapt to the client's drive pattern.
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
B20015A
28101-5DH-A40
Skill Level: Repair Technician
CLIENT 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 Acura
automobile dealer.
©
2020 American Honda Motor Co., Inc. — All Rights Reserved
Page 1 of 3
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
19-FEB-2020 or later
Notice DB Version
19-FEB-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 01-026, Updating Control Units/Modules.
Year/Model
Vehicle System
Program ID (or later)
2019 MDX 2WD
TCM
28101-5LX-A400
2019 MDX AWD
TCM
28101-5DH-A400
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 client concerns for the intermittent harsh or jerky upshift with steady acceleration or the MIL or OBS is on
with DTC P0716.
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 01-026,
Updating Control Units/Modules.
NOTE
Have the service manager or service consultant explain to the client that after the TCM update, it will take about 500
miles for the TCM to adapt to the client's drive pattern.
END
Page 3 of 3
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TSB/Document ID: B20-015
Replacement Service Bulletin Number:
MFR Communication Date: 2020-03-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM:SOFTWARE
MFR Component System:
MFR Component Subsystem:
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