Engine Controls - TRD Supercharger Equipped Hesitation
T-SB-0276-09August 17, 2009
ECM Calibration: TRD Supercharged 3UR-FE Driveability
Service Category
Engine/Hybrid System
Section
Engine Control
Market
USA
Applicability
Introduction
Some Sequoia and Tundra 3UR-FE vehicles equipped with a TRD Supercharger (P/N PTR29-34070) may exhibit a hesitation under heavy acceleration during certain operating conditions. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to improve this condition. Use the following repair procedure to address customer concerns.
Warranty Information
APPLICABLE WARRANTY
^ If the TRD Supercharger was installed by an Authorized Toyota Dealer; this repair is covered for 12 months, regardless of mileage, from the date the part was installed on the vehicle or the remainder of the Toyota Powertrain warranty, whichever provides greater coverage. The Toyota Powertrain warranty is in effect for 60 months or 60,000 miles, whichever occurs first, from the vehicle's in-service date.
^ If the TRD Supercharger was installed by anyone other than an Authorized Toyota Dealer, this repair is covered for 12 months, regardless of mileage, from the date the part was purchased.
^ Warranty application is limited to occurrence of the specified condition described in this bulletin.
Parts Information
2008 Sequoia:
2007 Tundra (w/o Tow Package):
2007 Tundra (w/ Tow Package):
2008 Tundra (w/o Tow Package):
2008 Tundra (w/ Tow Package):
NOTE
^ The ECM (PCM) should NOT be replaced as part of the repair procedure.
^ Authorized Modification Labels may be ordered in packages of 25 from the Materials Distribution Center (MDC) through Dealer Daily - Dealer Support Materials Orders.
2008 Sequoia:
2007 Tundra:
2008 Tundra:
Required Tools & Equipment
Repair Procedure
1. Confirm the condition matches the Introduction.
2. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in Figure 1. Confirm if the ECM (PCM) calibration has been updated. If the calibration ID listed is NOT the latest ECM (PCM) calibration - go to step 3.
3. Flash reprogram the ECM (PCM).
^ The GR8 Battery Diagnostic Station MUST be used in Power Supply Mode to maintain battery voltage at 13.5 volts while flash reprogramming the vehicle.
^ For details on how to use the GR8 Battery Diagnostic Station, refer to the located on the Technical Information System (TIS), Diagnostics - Battery
Follow the procedures outlined in TSB No.SS002-07, "Techstream ECU Flash Reprogramming Procedure", and flash the ECM (PCM) with the NEW calibration file update.
4. Install the Authorized Modifications Label.
A. Using a permanent marker enter the following information on the label:
^ ECM part number [Refer to the Parts Information section for the CURRENT PART NUMBER]
^ Calibration ID(s) [Refer to the Calibration Identification Chart for the NEW CALIBRATION ID]
^ Dealer Code
^ Repair Date
^ Change Authority [This TSB number]
B. Affix the Authorized Modifications Label to the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through the MDC P/N 00451-00001-LBL.
5. Test drive the vehicle to confirm proper vehicle operation.