ECM Calibration: Shifting Enhancement (TC006-04)
Publication date: 2004-12-06Reference number: TC006-04
ECM CALIBRATION: SHIFTING ENHANCEMENT
TECHNICAL SERVICE BULLETIN
Reference Number(s): TC006-04, Date of Issue:
December 6, 2004
| LEXUS: | 2004 - 2005 LS 430 |
| SECTION: | TRANSMISSION & CLUTCH |
| COPYRIGHT: | © 2018 Lexus, a division of Toyota Motor Sales, USA License Agreement TMS1002 |
INTRODUCTION
To enhance low speed ATM shifting, the Engine Control Module or ECM (SAE term: Powertrain Control Module/PCM) calibration has been updated.
APPLICABLE VEHICLES
- 2004 model year LS 430 vehicles.
- 2005 model year LS 430 vehicles produced BEFORE the Production Change Effective VIN shown below.
PRODUCTION CHANGE INFORMATION
PRODUCTION CHANGE INFORMATION
| Model | Production Change Effective VIN |
|---|---|
| 2005 LS 430 | JTHBN36F*5005700 |
CALIBRATION IDENTIFICATION INFORMATION
CALIBRATION IDENTIFICATION INFORMATION
| Model Year | Main/Sub ECM (PCM) | Previous Calibration ID | New Calibration ID |
|---|---|---|---|
| 2004 | Main | 35013000 | 35013300 |
| 2004 | Main | 35013100 | 35013300 |
| 2004 | Main | 35013200 | 35013300 |
| 2004 | Sub | 55013000 | 55021100 |
| 2004 | Sub | 55013100 | 55021100 |
| 2005 | Sub | 55021000 | 55021100 |
WARRANTY INFORMATION
WARRANTY INFORMATION
| OP Code | Description | Time | OFP | T1 | T2 |
|---|---|---|---|---|---|
| TC4006 | Recalibrate ECM Engine | 1.3 | 89661-50690 | 87 | 99 |
| TC4006 | Recalibrate ECM Engine | 1.3 | 89661-50691 | 87 | 99 |
| TC4006 | Recalibrate ECM Engine | 1.3 | 89661-50692 | 87 | 99 |
| TC4006 | Recalibrate ECM Engine | 1.3 | 89661-50780 | 87 | 99 |
NOTE:
Applicable Warranty*:
This repair is covered under the Lexus Emissions Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's in-service date.
This repair is covered under the Lexus 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
PARTS INFORMATION
| Model Year | Previous Part Number | Current Part Number | Part Name | Qty |
|---|---|---|---|---|
| 2004 | 89661-50690 | N/A | Computer, Engine Control | 1 |
| 2004 | 89661-50691 | N/A | Computer, Engine Control | 1 |
| 2004 | 89661-50692 | N/A | Computer, Engine Control | 1 |
| 2005 | 89661-50780 | 89661-50781 | Computer, Engine Control | 1 |
PARTS INFORMATION
| Previous Part Number | Current Part Number | Part Name | Qty |
|---|---|---|---|
| N/A | 00451-00001-LBL | Authorized Modification Labels | 1 |
NOTE:
Authorized Modification Labels may be ordered in packages of 25 from the Materials Distribution Center (MDC) through Dealer Daily or by calling the MDC.
REQUIRED SSTS
NOTE:
Additional Diagnostic Tester Kits, CAN Interface Modules, Program Cards or other SSTs may be ordered by calling SPX/OTC.
REPAIR PROCEDURE
- Check for the Authorized Modification Label affixed to the vehicle in the location shown in Fig 2. Confirm that the ECM (PCM) calibration has been updated. If not the latest ECM (PCM) calibration - go to step 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 Fig 3).
- The sample screen prints seen below are the 12.01a software version, and may differ from subsequent software versions.
NOTE:- If Calibration ID matches "Previous Calibration ID" as shown in "Calibration Identification Chart" above, proceed with flash reprogramming.
- If Calibration ID matches "New Calibration ID" as shown in "Calibration Identification Chart", this vehicle has already been reprogrammed.
- If ECU calibration ID is not the same as the "New Calibration ID" listed previously, proceed to Flash Reprogram ECM (PCM).
FLASH REPROGRAM ECM
CAUTION:
When reprogramming the LS 430, 12.01a production version or later MUST be used. Using any previous versions of software for reprogramming may result in IRREPARABLE DAMAGE to the ECU!
NOTE:
- If the "Check Engine" light is ON when ignition is turned back on to begin the reprogramming process, a scan tool cable problem exists. Refer to TSIB No. SS003-01 , "ECU Flash Reprogramming Error Message ."
- When reprogramming the LS 430 for this issue, calibration files for 2004 and 2005 model year cannot exist on the same Diagnostic Tester Program Card.
If necessary, delete previous calibrations from the Diagnostic Tester Program Card before downloading the new calibration file.
- With this calibration update, 2004 model year vehicles are updated to 2005 model year logic. When diagnosing powertrain-related M.I.L. "ON" or performance issues, refer to the 2005 LS 430 Repair Manual for both 2004 and 2005 model year vehicles.
- 2004 model year vehicles require VIN registration following reprogramming to prevent M.I.L. "ON" (P0630).
- Disconnect the radiator fan connectors, and connect a battery charger to the vehicle's battery. This will avoid voltage variations that can permanently damage the ECM (PCM) during the reprogramming process.
- Follow the procedures outlined in TSIB No. SS001-01 , "ECU Flash Reprogramming Process ," and flash the ECM (PCM) with new calibration file update.
- Reconnect the radiator fan connectors, and disconnect the battery charger.
- Enter the required information on the Authorized Modifications label and affix it to the vehicle at the location shown in Fig 2. The Authorized Modifications label is available through the MDC, P/N 00451-00001-LBL.
- Enter VIN of vehicle in ECM memory. Refer to procedures outlined in TSIB No. EG012-04 , "Entering VIN During ECM (PCM) Replacement and/or DTC P0630 ."
- Start the engine and warm it up to normal operating temperatures before test-driving.
- Perform a thorough test drive with several accelerations from a stop with "light throttle" application until proper transmission shifting is verified.