SB-10044282-2820

Class ification:

Refere nc e:

Date :

AT12-002a

ITB12-021a

June 1, 2012

2011 – 2012 M37; SHIFT RESPONSIVENESS ISSUES
This bulletin has been amended. Several changes have been made on page 1 and to Table A on page 6.
Please discard previous versions of this bulletin.

APPLIED VEHICLE: 2011 – 2012 M37 (Y51)
APPLIED VINS:

APPLIED DATES:

2011 models: all VINs
2012 2WD models: built before JN1BY1AP(*)CM 332915
2012 AWD models: built before JN1BY1AR(*)CM 393415
2011 models: all dates
2012 2WD models: built before August 1, 2011
2012 AWD models: built before July 31, 2011

IF YOU CONFIRM
One or more of the following conditions:
•

Harsher than expected down shifts when coasting to a stop.

•

Hesitation/lag when accelerating after coasting.

•

Hesitation/lag or harsher than expected down shifts when coming to a stop and accelerating again
(rolling stop).

•

Engine rev matching during moderate to heavy braking.
NOTE: Engine rev matching is normal operation of the ASC (Adaptive Shift Control) in normal drive
mode and sport mode. The ECM and TCM reprogramming in this bulletin will remove engine rev
matching from ASC in normal drive mode, but it will remain as part of the ASC in sport mode.

ACTION
1. Refer to step 6 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are
working on.
2. If this bulletin applies, reprogram the ECM and TCM.

IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to
successfully completing this repair.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe
that a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti dealer to determine if this
applies to your vehicle.
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CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
DESCRIPTION

PFP

OP CODE

SYM

DIA

FRT

Reprogram ECM & TCM

(1)

DX32AA

HD

32

0.8 hrs

(1) Refer to the electronic parts catalog (FAST or equivalent) and use the appropriate Transmission Control
Valve assembly part number as the Primary Failed Part (PFP).

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SERVICE PROCEDURE
•

This procedure will require reprogramming of the ECM and TCM; which means most steps in this
procedure will need to be done twice.

•

Most instructions for reprogramming with CONSULT-III plus (C-III plus) are displayed on the CONSULT
PC screen.

•

If you are not familiar with the reprogramming procedure, click here. This will link you to the
"CONSULT- III plus (C-III plus) Reprogramming" general procedure.

Preparation for Reprogramming
•

Take the vehicle for a 10 minute drive in order to meet the
following Idle Air Volume Learn (IAVL) conditions:
¾ Engine coolant temperature: 70 -100°C
(158 - 212°F)
¾ Battery voltage: More than 12.9V (At idle)
¾ Transmission: Warmed up
Figure A
NOTE:
• After ECM reprogramming is complete, you will be required to perform Throttle Valve
Closed Position, Idle Air Volume Learn (IAVL), and Accelerator Closed Position.
• The above conditions are required for the IAVL to complete.

CAUTION:
•

Connect a battery charger to the vehicle battery.
The vehicle battery voltage must stay between 12.0V and 15.5V during reprogramming, or the
ECM/TCM may be damaged.

•

Be sure to turn OFF all vehicle electrical loads.
If a vehicle electrical load remains ON, the ECM/TCM may be damaged.

•

Be sure to connect the AC Adapter.
If the CONSULT PC battery voltage drops during reprogramming, the process will be interrupted
and the ECM/TCM may be damaged.

•

Turn off all external Bluetooth® devices (e.g., cell phones, printers, etc.) within range of the
CONSULT PC and the VI. If Bluetooth® signal waves are within range of the CONSULT PC
during reprogramming, reprogramming may be interrupted and the ECM/TCM may be damaged.

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1. Connect the CONSULT PC to the vehicle to begin the reprogramming procedure.

2. Open ASIST on the CONSULT PC and start C-III plus.

3. Wait for the plus VI to be recognized / connected.
•

Serial number will display when the plus VI is recognized / connected.

4. Select Re/programming, Configuration.

Step 3: VI is
recognized

Step
4

Figure 1

5. Follow the on-screen instructions and navigate the C-III plus to the screen shown in Figure 2 on the next
page.

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6. When you get to the screen shown in Figure 2, confirm this bulletin applies as follows:
A. Find the ECM or TCM Part Number and write it on the repair order.
NOTE: This is the current ECM or TCM Part Number (P/N).

6A: Current P/N

Figure 2

Continue on the next page.

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B. Compare the P/N you wrote down to the numbers in the Current ECM or TCM Part Number column in
Table A below.
•

If there is a match, this bulletin applies. Continue with the reprogramming procedure.

•

If there is not a match, reprogramming does not apply. Make sure to check both ECM and TCM
for a match.

Table A
ECM
Model

Configuration
2WD AT ASCD
2WD AT ASCD 4WAS
2WD AT ICC

2011 M37

2WD AT ICC 4WAS

1MA0A, 1MA0B, 1MA0C, 1MA0D,
1MA6A, 1MA7A,
1MA1A, 1MA1B, 1MA1C, 1MA1D, 1MA1E,
1MA8A,
1MA2A, 1MA2B, 1MA2C, 1MA2D, 1MA2E,
1MA9A
1MA3A, 1MA3B, 1MA3C, 1MA3D, 1MA3E
1MB7A

4WD AT ICC

1MA4A, 1MA4B, 1MA4C, 1MA4D, 1MA4E,
1MB8A
1MA5A, 1MA5B, 1MA5C, 1MA5D, 1MA5E,
1MB9A

2WD AT ASCD
2WD AT ASCD 4WAS
2WD AT ICC LDP
2WD AT ICC LDP 4WAS

1MV0A, 1MV0B
1MV1A, 1MV1B
1MV2A, 1MV2B
1MV3A, 1MV3B

4WD AT ASCD
4WD AT ICC LDP

1MV4A, 1MV4B
1MV5A, 1MV5B

4WD AT ASCD

2012 M37

Current ECM Part Number: 23710-

TCM
Model
Early 2011 M37
Late 2011 M37
and
2012 M37

Configuration

Current TCM Part Number: 31039-

2WD

X455C, X355D, X212D, 1XJ6E

AWD

X455D, X355E, X212E, 1XJ7A

2WD

X452C, X455E, X216E

AWD

X456A, X452D, X217A

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7. Follow the on-screen instructions to navigate C-III plus and reprogram the ECM or TCM.
NOTE:
•

In some cases, more than one new P/N for reprogramming is available.
¾ In this case, the screen in Figure 3 displays.
¾ Select and use the reprogramming option that does not have the message “Caution! Use ONLY
with ITBXX-XXX”.

•

If you get this screen and it is blank (no reprogramming listed), it means there is no reprogramming
available for this vehicle.

xxxxx-xxxxx

xxxxx-xxxxx

xxxxxxxxxxxxxxxxxxxxxx

xxxxx-xxxxx

xxxxx-xxxxx

xxxxxxxxxxxxxxxxxxxxxx

Figure 3

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8. When the screen in Figure 4 displays, reprogramming is complete.
NOTE: If the screen in Figure 4 does not display (reprogramming does not complete), refer to the
information on the next page.
9. Disconnect the battery charger from the vehicle.
10. Select Next.

Step
10

Figure 4
NOTE:
•

In the next steps (page 10):
¾ For ECM reprogramming you will perform Throttle Valve Closed Position, Idle Air Volume
Learn, Accelerator Closed Position, and DTC erase.
¾ For TCM reprogramming, only DTC erase is needed.

•

These operations are required before C-III plus will provide the final reprogramming confirmation
report.

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If reprogramming does not complete and the “!?” symbol displays as shown in Figure 5:
•

Check battery voltage (12.0 –
15.5V).

•

Ignition is ON, engine not running.

•

External Bluetooth® devices are
OFF.

•

All electrical loads are OFF.

•

Select Retry and follow the on
screen instructions.
NOTE: Retry may not go through
on first attempt and can be
selected more than once.
Figure 5

If reprogramming does not complete and the “X” symbol displays as shown in Figure 6:
•

Do not disconnect the VI or shut
down C-III plus if
reprogramming does not
complete.

•

Check battery voltage (12.0 –
15.5V).

•

CONSULT A/C adapter is plugged
in.

•

Ignition is ON, engine not running.

•

Transmission in Park.

•

All C-III plus / plus VI cables are
securely connected.

•

All C-III plus updates are installed.

•

Select Home, and then restart
the reprogram procedure from
the beginning.

Figure 6

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11. Follow the on-screen instructions to perform the following:
•

Throttle Valve Closed Position

•

Idle Air Volume Learn (IAVL)
NOTE:
o Listed below are the conditions required for IAVL to complete.
o If IAVL does not complete within a few minutes, a condition may be out of range.
¾ Engine coolant temperature: 70 -105° C (158 - 221°F)
¾ Battery voltage: More than 12.9V (At idle)
¾ Selector lever: P or N
¾ Electric load switch: OFF (Air conditioner, headlamp, rear window defogger)
¾ Steering wheel: Neutral (Straight-ahead position)
¾ Vehicle speed: Stopped
¾ Transmission: Warmed up (ATF TEMP SE less than 0.9V)

•

Accelerator Pedal Close Position Learning

•

Erase DTCs

Continue to the next page.

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12. When the entire reprogramming process is complete, the screen in Figure 5 will display.
13. Verify the before and after part numbers are different.
14. Print a copy of this screen (Figure 7) and attach it to the repair order for warranty documentation.
15. Select Confirm.

Step
13

Step
14

Step
15

Figure 7
16. Make sure you have performed both ECM and TCM reprogramming.
17. Close C-III plus.
18. Turn the ignition OFF.
19. Disconnect the plus VI from the vehicle.
20. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.
•

If the MIL comes ON, go back to ASIST for further diagnostic information.

•

Diagnosis and repairs beyond ECM or TCM reprogramming are not covered by this bulletin.

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