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Discussion Starter · #1 ·
NUMBER: 18-010-07
GROUP: Vehicle Performance
DATE: February 7, 2007


THE StarSCAN® FLASH FILES FOR THIS BULLETIN MUST BE RETRIEVED FROM
THE INTERNET.

StarSCAN® SOFTWARE LEVEL MUST BE AT RELEASE 7.03 SP3 OR HIGHER FOR
THIS BULLETIN.

SUBJECT:

FLASH: 4.0L Momentary Sag, Shift Bump At Downshift

OVERVIEW:

This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM).

MODELS:

2007 (KA) Nitro

NOTE: This bulletin applies to KA models equipped with a 4.0L gasoline engine

(Sales Code EGS) built between 12/1/06 (MDH 1201XX) and 1/22/07 (MDH

0122XX).

SYMPTOM/CONDITION:

Some vehicle operators may experience momentary sag at the point where the
transmission downshifts. This can be described as a transmission shift bump.

DIAGNOSIS:

Using a Scan Tool (StarSCAN®) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all engine systems are functioning as designed. If DTC's are
present record them on the repair order and repair as necessary before proceeding further
with this bulletin.

PARTS REQUIRED:

Qty. Part No. Description
1 04275086AB Label, Authorized Modification

SPECIAL TOOLS / EQUIPMENT REQUIRED:


NPN Battery Charger

18-010-07 -2-


CH9401 StarSCAN® Tool
CH9404 StarSCAN® Vehicle Cable
CH9409 StarSCAN® Documentation Kit
CH9410 StarSCAN® Ethernet Cable, 12 ft.
CH9412 StarSCAN® Software Update Device Kit
TechCONNECT PC or equivalent

REPAIR PROCEDURE -USING THE INTERNET TO RETRIEVE THE FLASH FILE:

NOTE: When performing this Repair Procedure, the software release level in the
StarSCAN®; must be programmed with 7.02 SP3 software or higher. The
software release level is visible in the blue header at the top of the
StarSCAN® screen.

NOTE: The StarSCAN® diagnostic scan tool fully supports Internet connectivity.
However, to take advantage of this feature you must first configure the
StarSCAN® for your dealership's network. Make sure the StarSCAN® is
configured to the dealership's network before proceeding. For instruction on
setting up your StarSCAN® for the dealer's network refer to either:
“DealerCONNECT > Service > StarSCAN and StarMOBILE tools > Online
Documentation”, or refer to the StarSCAN® Quick Start Networking Guide.
The StarSCAN® Quick Start Networking Guide is also available on the
www.dcctools.com website under the "Download Center".

NOTE: If this flash process is interrupted/aborted, the flash should be restarted.

1. Install a battery charger and verify that the charging rate provides approximately 13.5
volts. Set the battery charger to continuous charge. Do not allow the charger to time
out during the flash process. Remove the charger from the battery when the flash
process is complete.
2. Connect the CH9410 StarSCAN® ethernet cable to the StarSCAN® and the dealer's
network drop.
3. Connect the CH9404 StarSCAN® vehicle cable to the StarSCAN® and the vehicle.
4. Power ON the StarSCAN®.
5. Using the StarSCAN® at the “Home” screen:
a. Select “ECU View”
b. Touch the screen to highlight the PCM in the list of modules.
c. Select “More Options”
d. Select “ECU Flash”
e. Record the part number at the top of the “Flash PCM” screen for later reference.
f. Select “Browse for New File”. Follow the on screen instructions.
g. Select “Download to Scantool”.
h. Select “Close” after the download is complete, then select “Back”.
i. Highlight the listed calibration.
j. Select “Update Controller”. Follow on screen instructions.
k. When the update is complete, select “OK”.
l. Verify the part number at the top of the “Flash PCM” screen has updated to the new
part number.

-3- 18-010-07


NOTE: The following step is required by law when reprogramming a PCM and/or
TCM.

6. Type the necessary information on the “Authorized Modification Label” p/n
04275086AB and attach near the VECI label (Fig. 1).
Fig. 1 AUTHORIZED MODIFICATION LABEL

1 -**POWERTRAIN CONTROL / TRANSMISSION CONTROL MODULE P/N's (INSERT P/N's) USED**
2 -CHANGE AUTHORITY: TSB XX-XXX-XX
3 -DEALER CODE: XXXXX
4 -DATE: XX-XX-XX

POLICY:

Reimbursable within the provisions of the warranty.

TIME ALLOWANCE:

Labor Operation No: Description Amount
18-19-06-45 Module, Powertrain Control (PCM) -Reprogram
(B)
0.4 Hrs.

FAILURE CODE:


ZZ Service Action
 

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NL... could you explain what exactly a 'shift bump' would feel like? I just purchased my R/T on Monday and I noticed a slight shifting irregularity. At odd times it feels like it quickly drops to a lower gear. Is this what I am noticing? Thanks. Any help would be greatly appreciated.

-Lil'
 

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Discussion Starter · #3 ·
NL... could you explain what exactly a 'shift bump' would feel like? I just purchased my R/T on Monday and I noticed a slight shifting irregularity. At odd times it feels like it quickly drops to a lower gear. Is this what I am noticing? Thanks. Any help would be greatly appreciated.

-Lil'
A momentary sag and shift bump would be a downshift that is slow accompanied by a bump. A bump is described as a lurch or jerk in the vehicle.

Does your Nitro fall with the affected dates as published in the TSB? Hope this helps.
 

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Discussion Starter · #6 ·
Built January 1. And yes that is exactly what it is doing on my R/T. So now what do I do?
Make an appointment with your dealer explaining your concern with the transmission shifting. Print out the TSB for when you go see your dealer. Request the repair be performed as outlined in the TSB.
 

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Took my R/T in with TSB in hand... said they still wanted to go over the vehicle to make sure it wasn't something else... Picked it up 6 hours later said they flashed the software based on the TSB and poof the bump shift disappeared! Sometimes ya gotta love technology! :D Thanks again for posting these details...

-Lil'
 
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