infiniti Workshop Repair Guides

Infiniti Workshop Service and Repair Manuals

A/T - WOT Delay/Hesitation On 5th - 2nd Gear Downshift|Page 10709 > < Campaign - Acceleration Hesitation/Delay|Page 10704
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Technical Service Bulletin # 02-040

Date: 020617

A/T - WOT Delay/Hesitation On 5th - 2nd Gear Downshift

Classification:
AT02-005

Reference:
ITB02-040

Date:
June 17, 2002

2002 Q45; 5-2 DOWNSHIFT DELAY/HESITATION AT 3/4-WOT THROTTLE AND 40-60 MPH

APPLIED VEHICLE: 
2002 Q45 (F50)

SERVICE INFORMATION

If a 2002 Q45 has a "delayed" automatic transmission 5-2 downshift that feels like a hesitation (perhaps at 3/4 to WOT [Wide Open Throttle] and
between 40 - 60 MPH), use this Service Procedure to determine if the:

^

Transmission Control Module (TCM) needs Reprogramming or replacement and if the

^

Engine Control Module (ECM) needs Reprogramming.

NOTES:

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One of the noticeable results of ECM/TCM reprogramming (in this case) is a firmer 5-2 downshift.

^

The ECM/TCM reprogramming data is available as of the 6/15/02 ASIST cd.

SERVICE PROCEDURE OVERVIEW

A/T - WOT Delay/Hesitation On 5th - 2nd Gear Downshift|Page 10709 > < Campaign - Acceleration Hesitation/Delay|Page 10704