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Technical Service Bulletins

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Technical service bulletins (TSBs) are issued by Infiniti to assist technicians with diagnosis and repair. TSBs address specific concerns or conditions such as rough idles, noises and rattles. These specific concerns can be the result of customer or repair shop feedback. The TSB for a specific concern or condition will provide an up-to-date engineering-approved vehicle modification, repair procedure or service part.

ITB09032

  • IF YOU CONFIRM: An Applied Vehicle has a harsh 4-3 downshift while coasting at 30-20 MPH, with closed throttle condition. NOTE: Engine braking may also be felt under the same driving conditions. 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, reprogram the TCM. See this bulletin for further detail.

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