Excursion 4WD V8-6.0L DSL Turbo VIN P (2004)
Air Flow Meter/Sensor: All Technical Service Bulletins
Engine Controls - Low Power/Surge/Flutter/Multiple DTC's
TSB 09-15-6
08/10/09
6.0L - BUILT ON OR BEFORE 9/29/2003 DTCS P006A,
P132B, P0401 OR P0402-LACKS POWER, SURGE,
OR FLUTTER AFTER FIELD SERVICE ACTION 06E17
FORD:
2003-2004 Excursion, F-Super Duty
This article supersedes TSB 06-24-6 to update the Service Procedure.
ISSUE
Some 2003-2004 F-Super Duty and Excursion vehicles equipped with the 6.0L engine built on or before 9/29/2003 may experience a P006A, P132B,
P0401 or P0402 diagnostic trouble code (DTC) with a lack of power condition, surge, or turbocharger flutter after performing Field Service Action
(FSA) 06E17, or after recalibrating the vehicle with the inferred Exhaust Pressure (EP) strategy. This inferred EP strategy does not use the Exhaust Back
Pressure (EBP) sensors input, although the EBP sensor must remain connected to the tube and the wiring harness.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
This procedure is to be used only on vehicles that have received the inferred EP calibration update. There are a variety of reasons why a customer could
experience a lacks power condition with the inferred EP calibration. These can include causes a person may not directly see as impacting the condition or
codes set. For example; a Mass Air Flow (MAF) / Manifold Air Pressure (MAP) code can be related to a MAF sensor or a MAP sensor problem.
However, those codes can be caused by other items such as: intake leaks, exhaust leaks, Exhaust Gas Recirculation (EGR) problems, and aftermarket
modifications.
Care should be taken to follow the entire procedure outlined below. Skipping a step may lead to being unable to properly diagnose one of these other
conditions setting a code.
1. Does the vehicle have any aftermarket parts or modifications (intake system, air filter, MAF, turbocharger, and/or programmer)?
a. Yes - Go to Step 2.
b. No - Go to Step 3.
The vehicle may be able to complete the Turbo Learn procedure with the aftermarket modifications present, however, drivability concerns may be
present when the vehicle is driven.
2. Remove the aftermarket parts, reinstall the factory OEM parts and then perform the turbo learn procedure under the Turbo Learn heading.
3.
Using IDS datalogger, has the Powertrain Control Module (PCM) learned the turbocharger strategy?
a. VGTLRN_OK YES and VGTVP_LE = 6 or higher (Mature), Go to Step 5.
b. VGTLRN_OK = NO or VGTVP_LE = 5 or less (Not Mature), perform the turbo learn procedure under the Turbo Learn heading and recheck. If
the learn still won't mature, go to Step 4.
Checking and/or clearing DTCs will reset the VGTLRN_OK PID to NO and the VGTLRN_LE PID to 2.
4. Using IDS datalogger, is the VGTLRN_CNC pid = YES?
a. YES - Means the conditions are NOT correct. The conditions must be correct in order for the learn to complete. Verify the conditions and
complete the Learn Procedure before proceeding to Step 5.
REQUIRED PARAMETERS:
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Engine Oil Temp (EOT) between 120-250° F (49-121° C).
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Idle speed between 570-780 RPM and steady.
