Engine, A/T Controls - Driveline Bump/Harsh 1-2 Shift
TSB 09-18-1009/21/09
DRIVELINE BUMP WHILE BRAKING BELOW 15 MPH
(24 KM/H) - HARSH 1-2 UPSHIFT - BUILT BEFORE
10/1/2008
FORD:
2009 Explorer Sport Trac, Explorer
MERCURY:
2009 Mountaineer
ISSUE
Some 2009 Explorer, Mountaineer and Explorer Sport Trac vehicles equipped with a 6R80 transmission and built prior to 10/1/2008 may exhibit a bump feeling while braking to a stop below 15 MPH (24 Km/h) and some vehicles a harsh 1-2 upshift. A later calibration is available to improve these conditions.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1. Install Integrated Diagnostic System (IDS)/Portable Diagnostic Software (PDS) or equivalent and start a session, identify (ID) vehicle.
2. Update the powertrain control module (PCM)/transmission control module (TCM) calibration using IDS release 62.11 and higher. This new calibration is included in the VCM 2009.7 DVD. Calibration files may also be obtained at the website.
The TCM cannot be independently reprogrammed. Reprogram using the programmable module installation (PMI) function to ensure that engine and transmission calibrations are updated to the latest level simultaneously.
In some cases it maybe helpful to
^ Disconnect the TCM connector.
^ Start a new IDS session.
^ Perform PMI on the PCM.
^ Once IDS instructs to install the new module in the vehicle, plug the TCM in and follow the prompts.
a. Verify that the TCM calibration shows 9L2P-7J104-AG part number after reprogramming is complete.
b. Select the following from the IDS tool:
(1) Toolbox.
(2) Powertrain.
(3) OBD Test Modes.
(4) Mode 9 Vehicle Information.
(5) TCM Cal Part Number.
3. Clear TCM keep alive memory (KAM) and adaptive tables.
a. Using IDS:
(1) Open Toolbox.
(2) Choose Powertrain.
(3) Choose Reset KAM.
(4) Choose TCM.
b. Using PDS:
(1) Choose all Tests and Calibrations.
(2) Scroll down the menu and choose reset TCM KAM.
NOTE
FOR PDS, RESET TCM KAM IS NOT THE SAME AS CLEAR TRANSMISSION ADAPTIVE TABLES, WHICH IS UNDER THE POWERTRAIN - TRANSMISSION MENU TREE.
NOTE
UNHOOKING THE BATTERY WILL NOT CLEAR THE TCM KAM. IT IS CRITICAL THAT TCM KAM BE CLEARED PRIOR TO RELEARNING THE ADAPTIVE TABLES FOR THE TRANSMISSION.
NOTE
DO NOT CLEAR THE PCM KAM.
4. Verify that the transmission fluid temperature (TFT) PID is above 175 °F (80 °C). If it is not at 175 °F (80 °C), drive unit approximately 3 miles (5 Km) to reach temperature.
NOTE
TFT MUST BE AT 175 °F (80 °C) OR ABOVE BEFORE PROCEEDING TO STEP 5.
NOTE
Perform Adaptive Shift Strategy learn on Level Surface road.
5. Drive unit to perform adaptive shift strategy learn.
a. Accelerate from rest with light throttle to 15 MPH (24Km/h), remove foot from accelerator pedal.
b. Brake very gently to a complete stop (allow at least six (6) seconds).
c. Repeat steps (a-b) five (5) times in the dealership parking lot or similar setting.
d. Accelerate from rest with light throttle ensuring that the 1-2, 2-3 and 3-4 shifts occur at engine speeds between 1600-2000 RPM.
e. Continue to accelerate until you achieve 50 MPH (80 Km/h) or the 5-6 upshift.
f. Brake gently to a complete stop and hold foot on brake for ten (10) seconds.
g. Repeat steps (d-f) three (3) times.
NOTE
THE HARSH BUMP FELT WHILE BRAKING TO A STOP WILL BE IMPROVED. HOWEVER, SEVERAL DAYS OF DRIVING ARE REQUIRED FOR THE TRANSMISSION TO FULLY ADAPT.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
091810A 2009 Explorer, 1.0 Hr.
Mountaineer, Explorer
Sport Trac 6R80
Transmission: Reprogram
The PCM And TCM,
Includes Time To Clear
KAM And Perform Road
Tests (Do Not Use With
12650D)
DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 04
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