Canada - Engine - Controls - Non-Linear Acceleration From A Sto

Bulletin
TSB3510

Issue Date
November 24, 2010

Market
Canada

Title
NON-LINEAR ACCELERATION FROM A STOP

Component
ENGINE ELECTRICAL

Models
'10 - '11 Tundra

INTRODUCTION:
Some 2010 - 2011 model year Tundra vehicles with the 1UR-FE (4.6 L) engine may exhibit nonlinear acceleration from a stop under certain conditions of low engine rpm with high engine load. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been revised to address this condition. Use the following repair procedure to recalibrate the ECM (PCM).






APPLICABILITY:






WARRANTY INFORMATION:





CALIBRATION INFORMATION:











PARTS INFORMATION:

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 your facing PDC.






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).

NOTE:
- 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 GR8 Battery Diagnostic Station Instruction Manual located on ETAS/TIS library > Tools > tools and equipment > GR8 Battery Diagnostic Station Instruction Manual.

Follow the procedures outlined in TSB2758, "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:
- ECU 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. or 2. The Authorized Modifications Label is available through your facing PDC, P/N 00451-00001-25.

5. Test drive the vehicle to confirm proper vehicle operation.

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.