Canada - Engine Control - Entering VIN ECM Replacement/DTC P063

Bulletin
TSB2046R

Issue Date
November 02, 2004

Title
ENTERING VIN DURING ECM (PCM) REPLACEMENT AND/OR DTC P0630

Component
ENGINE ELECTRICAL

Models
All '04 - '06 Models

TSB REVISION NOTICE:
- June 08, 2005: Content has been updated to include 2004 and 2006 model year vehicles. Step 4 of the VIN Write Procedure and step 3 of the VIN Read Procedure has been clarified to include RX400h vehicles.
The previous TSB should be discarded.

All 2005 and subsequent model year Lexus vehicles have the VIN (Vehicle Identification Number) stored in the Electronic Control Module (ECM) (SAE term: Powertrain Control Module/PCM) non-volatile memory. The VIN is accessible on the data stream using the Lexus Diagnostic Tester and can also be written to a new ECM (PCM) using a "VIN Read/Write" utility.

Service ECMs (supply parts) are shipped without the VIN; therefore, as part of the ECM (PCM) replacement procedure, the VIN must be written to the replacement ECM (PCM) using the Diagnostic Tester utility function. Failure to write the VIN to the ECM (PCM) will result in a MIL "ON" condition and set DTC P0630: VIN Not Programmed or Mismatch-ECM (PCM).

It is very important to remember to enter the VIN on these vehicles. Vehicles with missing VINs are subject to failing some state and local vehicle emissions Inspection and Maintenance programs.

NOTE:
2004 model year vehicles which have been flash reprogrammed may contain updated 2005 model year OBD II logic. These vehicles will require VIN entry into the ECM (PCM) after reprogramming.

APPLICABLE VEHICLES:
- 2004 model year vehicles that have been flash reprogrammed.
- 2005 - 2006 model year vehicles.






WARRANTY INFORMATION:






REQUIRED SSTs:

VIN WRITE PROCEDURE:

To write a VIN to a replacement ECM (PCM), use the following process:






1. Confirm the VIN. It is located on the front left of the instrument panel.
2. Connect the Diagnostic Tester to DLC3.
3. Turn the ignition switch and Diagnostic Tester switch ON.
4. All vehicles except RX400h:
Select from the Diagnostic Tester menus: DIAGNOSIS, ENHANCED OBDII, VIN and VIN WRITE.

RX400h vehicles:
Select from the Diagnostic Tester menus: DIAGNOSIS, OBD/MOBD, HV ECU, VIN and VIN WRITE.

5. Write the VIN in accordance with the Diagnostic Tester display.






6. Compare the VIN displayed on the Diagnostic Tester with the VIN on the instrument panel. If these are not the same, write the VIN again after turning the ignition switch OFF.

VIN READ PROCEDURE:






1. Connect the Diagnostic Tester to DLC3.
2. Turn the ignition switch and Diagnostic Tester switch ON.

5. All vehicles except RX400h:
Select from the Diagnostic Tester menus: DIAGNOSIS, ENHANCED OBDII, VIN and VIN READ.

RX400h vehicles:
Select from the Diagnostic Tester menus: DIAGNOSIS, OBD/MOBD, HV ECU, VIN and VIN READ.

3. Check the VIN displayed on the Diagnostic Tester.

HINT:
For further explanations, refer to ETAS, appropriate model repair manual: Diagnostics: SFI System: Registration.