Engine Controls - A/T Shift Improvement
ENGINEEGO56-06
REVISED
Title:
ECM CALIBRATION: ENHANCEMENT
TO SHIFTING PERFORMANCE
& SMOOTHNESS
Models:
'07 Camry (2AZ-FE, 5-Speed A/T)
September 29, 2006
^ May 8, 2007: The VIN for Tsutsumi in the Production Change Information table has been updated. The Diagnostic Tester software references have been updated to the latest version.
^ October 19, 2006: Production Change Information has been added. Previous versions of this TSB should be discarded.
Introduction
To enhance shifting performance and smoothness during acceleration, the Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) calibration has been revised.
^ Version 14.la or later Diagnostic Tester software is required to perform this procedure.
^ Before proceeding, verify the ECM (PCM) calibration has NOT been updated by checking for the Authorized Modifications Label (shown in step 1 of the Repair Procedure).
Applicable Vehicles
^ 2007 model year Camry vehicles equipped with 2AZ-FE engine and 5-speed automatic transmission produced BEFORE the Production Change Effective VINs shown below.
Production Change Information
Warranty Information
Applicable Warranty*:
This repair is covered under the Toyota Federal Emissions Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Parts Information
Required SSTs
Calibration Identification Chart
Repair Procedure
1. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in Figure 1. Confirm if the ECM (PC M) calibration has been updated. If NOT the latest ECM (PCM) calibration go to step 2.
2. Connect the Diagnostic Tester to the vehicle and select CURRENT ECU CAL from the ECU REPROGRAM MAIN MENU. Determine the vehicle's current ECU calibrations (see Figure 2).
- The sample screen prints seen below are the 14.1 a software version and may differ from subsequent software versions.
3. If the ECU calibration ID is NOT the same as the New Calibration ID" listed previously, proceed to Flash Reprogram ECM (PCM).
4. Flash Reprogram ECM (PCM)
NOTE:
A battery charger MUST be connected to the battery and set at medium charge setting during the Flash Reprogram procedure in order to maintain battery voltage above 11.4 volts and prevent damage to the ECM (PCM).
Follow the procedures outlined in TSB No. SS002-01, "ECU Flash Reprogramming Process, " and flash the ECM (PCM) with the NEW calibration file update.
NOTE:
If the "Check Engine" light is ON when the ignition is turned back ON to begin the reprogramming process, a scan tool cable problem exists. Refer to TSB No. SS004-01, "ECU Flash Reprogramming Error Message."
5. Start the engine and warm it up to normal operating temperature before test-driving.
6. Test-drive vehicle to confirm proper vehicle operation and to complete the ECM learning process.
A. Complete the first ECM learning process:
Allow the vehicle to accelerate 5 times while maintaining steady accelerator pedal angle (approximately 25 degrees) during the transmission upshifts.
B. Complete the second ECM learning process:
Moderately accelerate engine until vehicle speed is over 45 mph and transmission has completed all shifts including torque converter lockup.
7. Enter the required information on the Authorized Modifications Label and affix it to the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through the MDC, P/N 00451-00001-LBL.
8. Calibration update is complete.