Engine Controls - MIL ON/DTC P0456 Stored In ECM
TSB 09-1-201/26/09
MALFUNCTION INDICATOR LAMP (MIL) ON WITH
DIAGNOSTIC TROUBLE CODE (DTC) P0456 - BUILT
ON OR BEFORE 4/14/2008
FORD:
2006-2008 Explorer
2007-2008 Explorer Sport Trac
MERCURY:
2006-2008 Mountaineer
This article supersedes TSB 08-16-10 to add a production fix date.
ISSUE
Some 2006-2008 Explorer, Mountaineer and 2007-2008 Sport Trac vehicles built on or before 4/14/2008 may exhibit a malfunction indicator lamp (MIL) on with diagnostic trouble code (DTC) P0456 in the powertrain control module (PCM) memory with no other PCM trouble codes.
ACTION
Follow the Service Procedure steps to reprogram the PCM and the transmission control module (TCM) if necessary.
SERVICE PROCEDURE
Use the correct procedure for the vehicle application you are working on. For all 4.0L engines follow Procedure A and for all 4.6L engines follow Procedure B.
Procedure A (4.0L Engine)
1. Reprogram the PCM to the latest calibration using Integrated Diagnostic System (IDS) release 52.8 and higher or 53.1 and higher. This new calibration is not included in the VCM 2007.11 DVD. Calibration files may also be obtained at the website.
Procedure B (4.6L Engine)
NOTE
VEHICLES EQUIPPED WITH A PCM AND TCM, REQUIRE A COORDINATED REPROGRAMMING. THIS COORDINATED REPROGRAMMING PROCEDURE MUST BE FOLLOWED EXACTLY AS OUTLINED BY THE IDS. FAILURE TO FOLLOW THE KEY CYCLE PROCEDURE WITHOUT WAITING FOR THE IDS PROMPTS, WILL CAUSE THE COORDINATED REPROGRAMMING TO FAIL. THE PCM WILL BE UPDATED BUT THE 1CM WILL NOT BE UPDATED AND THE NEW FILES WILL NOT BE INSTALLED. IT IS CRITICAL TO FOLLOW THE IDS PROMPTS
1. Install IDS / Portable Diagnostic Software (PDS) or equivalent and identify (ID) the vehicle.
2. Update the PCM and TCM calibration using IDS release 52.8 and higher or 53.1 and higher. This new calibration is not included in the VCM 2007.11 DVD. Calibration files may also be obtained at the website. Since the TCM 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
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.
(3) Verify that the transmission fluid temperature (TFT) PID is above 175 °F (80 °C).
4. 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 to 15 MPH (24 Km/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. Continue to accelerate until you achieve 50 MPH (80 Km/h) or the 5-6 upshift.
e. Accelerate from rest with light throttle. The 1-2, 2-3, and 3-4 shifts must occur at engine speeds between 1300-1800 RPM.
f. Continue to accelerate gently to 50 MPH (80 Km/h) or the 5-6 upshift.
g. Brake gently to a complete stop and hold foot on brake for at least 10 seconds.
h. Repeat Steps (e-f) a total of three (3) times.
NOTE
AUTHORIZATION DECAL NOT REQUIRED.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions 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
090102A 2006-2008 Explorer, 0.3 Hr.
Mountaineer 2007-2008
Explorer Sport Trac 4.0L
Engine: Check DTCs,
Reprogram The PCM (Do
Not Use With 12650D)
090102B 2006-2008 Explorer, 1.0 Hr.
Mountaineer 2007-2008
Explorer Sport Trac 4.6L
Engine: Check DTCs,
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
RECALEM 04
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