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Technical Service Bulletin
SUBJECT:

SHIFT SHOCK WHEN COMING TO A STOP OR
AFTER A COMPLETE STOP

No:

TSB−17−23−003

DATE:

April, 2017

2014−17 Mirage, 2017
Mirage G4
MODEL:

CIRCULATE TO:

[ ] GENERAL MANAGER

[ X ] PARTS MANAGER

[ X ] TECHNICIAN

[ X ] SERVICE ADVISOR

[ X ] SERVICE MANAGER

[ X ] WARRANTY PROCESSOR

[ ] SALES MANAGER

PURPOSE
On certain Mirage and Mirage G4 vehicles with CVT transmissions, drivers may experience shift shock
in the following conditions:
Condition 1: When coming to a stop.
Condition 2: After coming to a complete stop with the transmission in the D range.
The first condition may be caused by improper timing of the torque converter clutch disengagement.
The second condition may be due to improper CVT clutch engagement control, causing the driver to
experience shift shock when the CVT clutch is re-engaged.
This TSB instructs dealers to reprogram the CVT ECU with updated software to optimize the torque
converter or CVT clutch engagement control to minimize shift shock.

AFFECTED VEHICLES
The following vehicles equipped with CVT transmissions may exhibit one or both shift shock
conditions:
Condition

Model

1&2

Mirage

2

Mirage
Mirage G4

Model Year

Affected VIN Range
Starting VIN

2014

All

2015
2017

Ending VIN

Beginning of
Production

ML32A3HJ2HH020447
ML32F3FJ9HHF19303

REQUIRED OPERATIONS
1. Confirm your MUT-III is updated with the latest reprogramming database.
2. Reprogram the CVT ECU with the new software. Refer to the CVT ECU Reprogramming Chart for new
software information.
IMPORTANT: If an affected vehicle has a Malfunction Indicator Lamp (MIL) illuminated before
reprogramming, and DTCs are listed in the CVT ECU memory, diagnose and repair those DTCs per the
service manual before reprogramming. DO NOT reprogram the CVT ECU until the reason(s) for other
DTCs being set is corrected.

Copyright 2017, Mitsubishi Motors North America, Inc.

Continued

The information contained in this bulletin is subject to change. For the latest version of this document, go to the Mitsubishi Dealer Link,
MEDIC, or the Mitsubishi Service Information website (www.mitsubishitechinfo.com).
(4549)

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EQUIPMENT
The following equipment is needed to reprogram the CVT ECU.
D

VCI (Vehicle Communication Interface) or VCI Lite - MB991824 or MB992744.

D

MEDIC Laptop/Tablet with A/C power adapter - 520924, or FZG1MK2.

D

MUT-III main harness 'A' (blue connector at the DLC end) - MB991910 or MB992745.

D
D

USB 2.0 cable - MB991827 or MB992747.
MEDIC 3.5/4 update at 460 or higher.

D

For Standalone MUT-III SE units, MUT3-SE Reprogramming Database N170401 or higher.

CVT ECU REPROGRAMMING CHART
CVT ECU
Part Number

Data No.

2014-15 Mirage

8631A974

2017 Mirage, Mirage G4

8631B407

Model

Software Part Number
Previous

New

8631B825

8631A974 0A
8631A974 0B
8631A974 0C

8631A974 0D

8631B439

8631B407 0A

8631B407 0B

NOTE: Learning procedure is not required after reprogramming.

REPAIR PROCEDURE
MEDIC VERSION VERIFICATION
For MEDIC 3.5/4 users only: (MUT-III STV users go to
step 4.)
1. Verify the MEDIC 3.5/4 is at version 3.5 and at update
460 or higher.
If your MEDIC 3.5/4 update is at least 460, continue
with the Reprogramming Procedure.
Version and Update
numbers

If your MEDIC 3.5/4 update is below 460, update your
MEDIC as follows.

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2. Select the MEDIC 3.5/4 Admin tab and click on
“Updates.”

Admin

Click on
Updates

3. IF the MEDIC update screen advises updates are
available, click the “Begin” button. After all updates are
complete, GO TO THE REPROGRAMMING
PROCEDURE.

Click “Begin”

4. STANDALONE MUT-III SCAN TOOL VIEWER
(STV) ONLY: (MEDIC 3.5 USERS GO TO THE
REPROGRAMMING PROCEDURE). Verify that your
MUT3-SE has the most current version of the
reprogramming database:
From the MUT3-SE Main Page:
a. Click “STV.”

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b. Click the “ECU Reprogramming” button

c. Click “SDB Data List”

d. Confirm that the database number displayed in the
upper right above the chart is N170401 or higher
N170401

D

If the database number displayed on your
MUT3-SE is N170401 or greater, continue to
the Reprogramming Procedure.

D

If the reprogramming database number
displayed on your MUT3-SE is lower than
N170401, then the MUT3-SE database
needs to be updated.

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REPROGRAMMING PROCEDURE
NOTE:

VCI Stand−alone reprogramming is not available for this procedure.
The laptop/tablet and the VCI must remain connected for the entire procedure.

! CAUTION

To ensure that the vehicle battery maintains 12V during the procedure, hook-up
a battery charger to the vehicle during the procedure.
1. Connect the equipment as follows:
NOTE: VCI Lite and MEDIC 4.0 Toughpad shown for illustration purposes only.

Data Link Connector
(Blue End)
MUT−III
Main Harness

USB Cable
Toughpad
(back)

D

Turn the MEDIC PC/tablet on. If the battery indicator
in the lower right hand corner of the screen does not
show a full charge, it is recommended that either the
battery be charged prior to beginning, or be used
with the A/C power adaptor connected.

D

Connect the USB cable to the VCI/VCI Lite.

D

When the laptop/tablet displays the MUT-III main
screen, connect the USB cable to the device.

D

Connect the MUT-III main harness with the blue
DLC connection to the VCI/VCI Lite.

D

Connect the blue connection of the MUT-III main
harness to the vehicle's data link connector.

D

Turn the VCI power switch ON. Verify that the
indicator lamp in the upper right corner of the screen
is green.

VCI Lite

! CAUTION

DO NOT DISTURB THE HARNESS CABLES OR CONNECTIONS DURING THE CODING PROCESS
AS IT COULD CAUSE THE CONTROL UNIT TO LOSE DATA. IF THE USB CABLE IS
DISCONNECTED DURING THIS PROCEDURE, A WARNING MESSAGE WILL DISPLAY.
2. Turn the ignition switch to the “ON” position.

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3. Using MEDIC, from the main page, click the
“MUT3-SE” icon at the top center of the screen to
open MUT-III SE.
Click the STV button.

4. The System Select screen opens and populates with
some basic information from the vehicle.
Look at the label on the passenger side B pillar to
identify the appropriate class.
Then select the correct class from the drop-down list.

5. The System List should now populate with vehicle
information.
Select the correct Loading Option Setup from the
drop-down lists.
D

TPMS: (e.g., with F.A.S.T. / w/o F.A.S.T.)

D

AUDIO: (e.g., Intelligent Display / Display Audio /
Standard Audio)

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6. Verify that the CVT ECU has not already been updated to the latest S/W number in the table above.
If the CVT ECU is at the latest level, reprogramming is not necessary.
a. Select “ELC-AT/CVT/TC-SST” from the System
List, then click on the check mark at the bottom of
the screen.

b. Select “Special Function.”

c. Select “ECU Information.”

d. If the Software Part Number listed is not at the
latest level (shown in the CVT ECU
Reprogramming table), proceed with the next
step.
If the Software Part Number is at the latest level,
then reprogramming is not necessary.

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7. Before reprogramming, perform an “Erase and Read All DTCs” to clear any DTCs that may have set.
a. Click the home button to go back to the System
Select screen.
Click the “ALL DTC” button.

b. Select “Erase and Read All DTCs.”

c. A window will pop up asking you to confirm DTC
erasing. Click the check mark in the dialog box for
DTC erasing and reading to begin.

d. The “System List” on the left side of the screen will
have all selections checked. Do not change these
selections. DTCs may be set if the vehicle is
equipped with options that are unchecked.
e. Click the check mark to continue.

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8. When DTC erasing is completed, click the check mark
in the pop-up message that reads “All erasing and
checks are completed.”
a.

If DTCs return after erasing is completed, click the
check mark to clear the window. Diagnose and
repair per the Service Manual.

b. If DTCs do not return, click the check mark to
clear the window, then click the Home icon in the
lower left to return to the System Select menu.

9. Reprogram the CVT ECU following the steps below.
NOTE: Reprogramming the CVT ECU with the latest database (e.g., N170401) includes all past and current
reprogramming for TSBs of affected vehicles. It is not necessary to reprogram the CVT ECU for each
previous TSB.

a. Select “ELC-AT/CVT/TC-SST” from the System
List, then click on the Reprogram button.

b. Select “ECU Reprogramming (SDB).”

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c. Verify the correct system is selected in the System
List, then click the check mark.

d. Select the correct data file listed in the CVT ECU
Reprogramming table:
D

2014-15 Mirage: 8631B825

D

2017 Mirage, Mirage G4: 8631B439

e. Click the check mark at the bottom of the page to
initiate reprogramming.

f.

Click the check mark in the
reprogramming data.” dialog box.

“Check

g. Once the reprogramming is initiated, the screen
shown will indicate the reprogramming progress.
NOTE: Do NOT disturb the cables or turn off the
ignition during reprogramming.

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h. Click the check mark in the “Completed” dialog
box.

i.

Verify the correct information is listed in the table.
Click the check mark at the bottom of the page,
then click the Home button to return to the System
Select screen.

10. Perform an “Erase and Read All DTCs” again to clear any DTCs that may have set.
For instructions, refer to steps 7 and 8 in this TSB.
11. Verify that the software Data No. is now at the latest number listed in the CVT ECU Reprogramming
table in this TSB.
For instructions, refer to step 6 in this TSB.
12. Turn off the ignition switch and disconnect the MUT-III. Turn off and disconnect the battery charger.
13. Test drive the vehicle to confirm proper operation.

WARRANTY INFORMATION
This bulletin is supplied as technical information only and is not an authorization to repair. If an
affected vehicle is reported with the described condition, diagnose the condition, repair as described
in this bulletin and submit a normal warranty claim using the following information.
Operation

Labor Operation
Code

Nature Code

Cause Code

Time
Allowance

Reprogram CVT ECU

238501 13

82J

8A0

0.4 hrs.

Warranty Coverage: 8 years / 80,000 miles