Engine Control - Harsh 1-2/2-1 Shifts/1-2 Shift Flare
TSB 07-8-1104/30/07
HARSH 1-2 AND/OR 2-1 SHIFTS, TIP-IN HESITATION OR SURGE, AND/OR LONG ENGAGEMENT TIME
FORD:
2007 Expedition
LINCOLN:
2007 Navigator
This article supersedes TSB 07-4-8 to update the vehicle application.
ISSUE
Some 2007 Expedition and Navigator vehicles may exhibit a harsh tip-in from low speeds below 7 MPH (11 Km/h), typically when still in 1st gear such as when in a traffic jam. Additionally some 2007 Expedition vehicles may exhibit a harsh 1-2 shift and/or 2-1 downshift, 1-2 shift flare, and/or long engagement time.
ACTION
Reprogram the powertrain control module (PCM) and transmission control module (TCM) to the latest calibration using IDS release 47.6 or higher and 48.1 and higher. This new calibration is not included in the VCM 2007.3 DVD. Calibration files may also be obtained at the website.
SERVICE PROCEDURE
Navigator Procedure
1. Install IDS/PDS or equivalent and ID vehicle.
2. Update the PCM calibration using IDS release 47.6 or higher and 48.1 and higher.
Expedition Procedure
1. Install IDS/PDS or equivalent and ID vehicle.
2. Update the PCM and 1CM calibration using IDS release 47.6 or higher and 48.1 and higher. Since the 1CM cannot be independently reprogrammed, reprogram the PCM to ensure that engine and transmission calibrations are updated to the latest level simultaneously.
3. Clear TCM keep alive memory (KAM) and adaptive tables.
a. Using IDS
(1) Open Toolbox.
(2) Choose Powertrain.
(3) Choose reset KAM.
(4) Then choose TCM.
b. Using PDS
(1) Choose "All Tests and Calibrations".
(2) Scroll down the menu and choose "Reset TCM KAM"
NOTE
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.
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.
5. Drive unit to perform adaptive shift strategy learn.
a. Accelerate from rest with light throttle. The 1-2, 2-3, and 3-4 shifts must occur at engine speeds between 1300-1800 RPM.
b. Continue to accelerate gently to 50 MPH (80 Km/h) so that the transmission shifts into 6th gear.
c. Brake gently to a COMPLETE STOP and hold foot on brake for at least 15 seconds.
d. Repeat Steps (a-d) a total of five (5) times
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
070811A 2007 Navigator: Check 0.4 Hr.
DTCs And Reprogram The
PCM. (Do Not Use With 12650D)
070811B 2007 Expedition: Check 0.9 Hr.
DTCs And Reprogram The
PCM and TCM, Includes
Time To Clear KAM,
Check Fluid Level, And
Update Transmission
Adaptive Strategy (Do Not
Use with 12650D)
DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 04
Disclaimer