Canada - Engine Control - ECM Calibration, Shifting

Bulletin
TSB0620R

Issue Date
August 26, 2003

market
Canada

Title
ECM CALIBRATION: SHIFTING ENHANCEMENT

Component
ENGINE ELECTRICAL

Models
'02 - '03 ES 300

REVISION NOTICE:
April 06, 2005: Introduction and Note have been updated. Calibration Identification Chart has been updated.
Previous versions of this TSB should be discarded.

To improve the transmission shift feeling during specific operating modes, the Engine Control Module (SAE term: Powertrain Control Module/PCM) calibration has been revised. These improvements include:
- Reduced downshift lag when accelerating at speeds from 10 to 20 mph/16 to 32 kmh.
- Less gear hunting when driving on/off accelerator pedal at 20 to 30 mph/32 to 48 kmh (for example: during heavy rush-hour traffic).
- Improved response rate during heavy acceleration from a stop.

NOTE:
- Version 12.01a 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).
- Harsh ATM shifting may result if any Repair Procedure steps are omitted (specifically steps 2 and 4 of "Flash Reprogram ECM").

APPLICABLE VEHICLES:
- 2002 - 2003 model year ES 300 vehicles.







WARRANTY INFORMATION:







PARTS INFORMATION:







REQUIRED SSTs:







ECM CALIBRATION NUMBER INFORMATION:

NOTE:
2002 model year ES 300 vehicles, which have been flash reprogrammed using the procedures in this TSB, will contain upgraded 2003 model year OBD II logic. Refer to the 2003 model year ES 300 Repair Manual information on ETAS when checking Powertrain Diagnostic Trouble Codes (DTCs) on 2002 model year ES 300 vehicles that have been reprogrammed.

REPAIR PROCEDURE:







1. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in Figure 1. Confirm if ECM (PCM) calibration has been updated. If not 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 calibration (see Figure 2).

NOTE:
The sample screen prints seen are the 10.1a software version, and may differ from subsequent software versions.

NOTE:
- If Calibration ID matches "Previous Calibration ID" as shown, proceed with flash reprogramming.
- If Calibration ID matches "New Calibration ID" as shown, this vehicle has already been reprogrammed. Refer to Repair Manual for diagnosis.

3. If ECU calibration ID is not the same as the "New Calibration ID" listed previously, proceed to Flash Reprogram ECM.
4. Flash Reprogram ECM
Follow the procedures outlined in TSB No. 2064, "ECU Flash Reprogramming Process" and flash the ECM with new calibration file updates.

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. 2064, "ECU Flash Reprogramming Process."







5. Reset the ECM learned values using the diagnostic tester. Refer to the procedures below.
- The sample screen prints seen are the 10.1a software version, and may differ from subsequent software versions.

NOTE:
Failure to reset the ECM memory will result in continued ATM shifting complaints.

6. Follow the procedures outlined in TSB No. 2046, "Entering VIN During ECM (PCM) Replacement and/or DTC P0630," and write the VIN to the ECM (PCM).
7. Start the engine and warm it up to normal operating temperature before test-driving.
8. Test drive vehicle to confirm proper vehicle operation.
9. 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 PDC, P/N-00451-00001-25
10. Calibration update is complete.

NOTE:
- Select premium unleaded gasoline with an Octane Rating of 91 (Research Octane Number 96) or higher for optimum engine performance.
- Effect of the new calibration may become more apparent after several days of driving as the ECM's learned values' are established from the customer's driving habits.

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.