CVT Controls - Low Speed Hesitation Or Surge: Overview

Classification: AT10-004B

Reference: NTB10-121B

Date: September 12, 2011

2007-2011 ALTIMA
SLIGHT VEHICLE HESITATION OR SURGE TYPE FEEL AT LOW SPEEDS

Table A was amended. Please discard previous versions of this bulletin.

APPLIED VEHICLE: 2007 - 2011 Altima (L32 and CL32) Sedan and Coupe

APPLIED TRANS: CVT only

APPLIED ENGINE: QR25 only

IF YOU CONFIRM

There is a slight vehicle hesitation type feel and/or a surge type feel when all of the following conditions are present:

^ Speed between 10 and 45 mph and

^ Transmission torque converter clutch is engaged (lock mode) and

^ Engine RPM between 1200 and 2000 and

^ Light acceleration

IMPORTANT NOTE:
Very slight vehicle hesitation type feel and/or surge type feel under these conditions are a normal operating characteristic of this vehicle and are within design specifications for the vehicle. However, for those customers who are particularly sensitive to this characteristic of their vehicle, the actions in this bulletin may be performed for customer satisfaction.

ACTIONS

1. Refer to Step 2 in the Service Procedure to confirm this bulletin applies to the vehicle you are working on.

2. If this bulletin applies, make sure the customer is informed of the Customer Information below.

3. If after informing the customer of the Customer Information, the customer voluntarily chooses to have the condition addressed with the specification change, then:

^ Reprogram the TCM, and

^ Install the Torque Rod Service Kit listed in the Parts Information.

Customer Information

1. Very slight vehicle hesitation type feel and/or surge type feel under the conditions described on page one are a normal operating characteristic of this vehicle and are within design specifications for the vehicle.

2. For those customers who are particularly sensitive to this characteristic of their vehicles, the transmission control module reprogramming procedure described in this bulletin may be performed. However, the customer should be advised that this is a specification change and differs from the original specification that exists on their vehicle.

3. If a customer voluntarily chooses to have this specification change made to their vehicle, they should be advised that their actual MPG may (or may not) slightly decrease (up to 1 mpg) as a result, depending on their driving habits and other conditions.





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