2017 Infiniti G37 Sedan V6-3.7L Diagnostic and Repair Information # 10-075A Date: 110414
A/T Controls - Shift Issues/Multiple DTC's Set
Classification: AT10-008A
Reference: ITB10-075A
Date: April 14, 2011
2009-2011 G37 AND 2011 G25;
TRANSMISSION SHIFT ISSUES AND/OR A/T DTC STORED
This bulletin has been amended. The APPLIED VEHICLES, IF YOU CONFIRM, and CLAIMS INFORMATION sections have been revised.
Please discard all previous versions of this bulletin.
APPLIED VEHICLES:
2009-2011 G37 Sedan, Coupe, and Convertible (V36, CV36 and HV36)
2011 G25 Sedan (V36)
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APPLIED VINS & DATES
NOTE:
2011 G37 Coupe IPL (Infiniti Performance Line) is not included in this TSB.
IF YOU CONFIRM
On an Applied Vehicle:
^ Any of these incorrect gear ratio DTCs stored: P0732, P0733, P0734, P0735, P0729 and/or P1734 and/or
^ A slight vehicle vibration/shutter with light acceleration at low speeds, and/or
^ At times, the engine rpm goes up (about 200 to 250 rpm) during the 3rd > 4th up shift, or the 4th > 5th up shift and/or
^ Engine braking feel is more than expected with deceleration, and/or
^ The 2nd > 1st down shift is harsher than expected.
IMPORTANT:
The purpose of ACTIONS 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.
ACTIONS
1. Perform TCM reprogramming.
^ Refer to step 3 under TCM reprogramming in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on.
2. For G37, perform ECM reprogramming - (ECM reprogramming is not needed for G25).
^ Refer to step 3 under ECM reprogramming in the SERVICE PROCEDURE to confirm ECM reprogramming applies and is needed for the vehicle
you are working on.
NOTE:
The ECM reprogramming used for this bulletin is also used for another issue and may have already been performed on your vehicle.
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CLAIMS INFORMATION
Service Procedure
SERVICE PROCEDURE
TCM Reprogramming
1. Connect C-III to the vehicle to begin the reprogramming procedure.
^ Make sure to erase DTCs from all systems.
^ TCM initialization is not needed for 7 speed A/T reprogramming.
REPROGRAMMING CAUTION
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2. Navigate C-III to the reprogramming screen shown in Figure 1 example.
NOTE:
^ Do not use the "Reprogramming / Programming" selection.
^ Select the Model and Model Year, and then navigate to Direct Diagnosis > Reprogramming.
^ TCM initialization is not needed for 7 Speed A/T reprogramming.
3. On your C-III screen look for a Transmission Part Number in the Part Number column (see Figure 1 example).
^ If there is no Transmission Part Number listed, this bulletin does not apply.
^ If a Transmission Part Number is listed, write it on the Repair Order and then go to step 4.
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4. Compare the P/N you wrote down to the numbers in the Current TCM P/N column in Table A above.
^ If there is a match this bulletin applies. Continue with the reprogramming procedure.
^ If there is not a match this bulletin does not apply. Close C-III and refer to ASIST for further diagnostic information.
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5. If this bulletin applies and you have performed TCM reprogramming; when reprogramming is complete the screen in Figure 2 displays.
6. Erase DTCs in all systems.
^ During TCM reprogramming DTCs will set in several systems and must be erased before ECM reprogramming.
7. Go to ECM Reprogramming below.
ECM Reprogramming
^ Make sure to erase DTCs from all Systems.
^ If your not familiar with the reprogramming procedure refer to "CONSULT-III (C-III) ECM Reprogramming"
1. Restart the C-III session by selecting the Home icon in the upper left corner of the screen.
2. Navigate C-III to the ECM Reprogramming screen shown in Figure 1A.
^ Use the "Reprogramming / Programming" selection.
^ Do not use Direct Diagnosis > Reprogramming.
3. On your C-III screen, look at the Part Number column (see Figure 1A example):
^ If this column is blank (no part number listed), this reprogramming does not apply.
NOTE:
The ECM reprogramming used for this bulletin is also used for another issue and may have already been performed on your vehicle.
^ If a Part Number is listed, write it on the Repair Order.
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4. Compare the Part Number you wrote down to the numbers in the Current ECM P/N column in Table A-1.
^ If there is a match, this reprogramming applies. Continue with the reprogramming procedure.
NOTE:
If there are two Engine lines (two ECM reprogramming options) on your C-III screen, use the one that does not have the message "Caution! Use
ONLY with ITBXX-XXX".
^ If there is not a match, this reprogramming does not apply.
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5. When ECM reprogramming is complete, the screen in Figure 2 displays.
6. Make sure to erase DTCs from all systems.
NOTE:
During reprogramming, DTCs will set in several systems and must be erased.
7. Test drive the vehicle and confirm the incident is resolved.
