Canada - ECM Reset Memory Function

Bulletin
1251

Issue Date
August 27, 2004

Market
Canada

Title:
ECM RESET MEMORY FUNCTION

Component
AUTOMATIC TRANSMISSION/TRANSAXLE

Model
'00 - '05 All Models

TSB REVISION NOTICE:
- December 22, 2004: Applicable Vehicles section has been updated 2004 and 2005 model years added, models and model years updated for various models; and Reset Procedure 2 has been revised.
- August 27, 2004: 2004 and 2005 model vehicles were added to the Applicable Vehicles chart. Previous versions of this TSB should be discarded.

Whenever an automatic transmission is replaced, overhauled or individual components are replaced, use this procedure to clear Engine Control Module (ECM, SAE term:
Powertrain Control Module, PCM) "Learned Values" to prevent subsequent driveability complaints.

CAUTION:
Failure to follow the procedure below may lengthen the time to readjust the "ECM" Learned Values potentially resulting in performance concerns.

REQUIRED SSTs:

WARRANTY INFORMATION:

APPLICABLE VEHICLES:

Refer to Reset Procedure 1 for the following vehicles with Electronically Controlled Automatic Transmissions:

Refer to Reset Procedure 2 for the following vehicles with Electronically Controlled Automatic Transmissions:

RESET PROCEDURE 1:
1. Connect the Toyota Diagnostic Tester to the vehicle.

2. Reset the ECM (PCM). Refer to the procedures.

3. Start the engine and warm it up to normal operating temperatures before test driving.
4. Perform a thorough test drive with several accelerations from a stop with "light throttle" application until proper transmission shifting is verified.

RESET PROCEDURE 2:
1. Disconnect the negative battery cable for 5 minutes.
2. Reconnect battery cable and reset radio presets and No. 1 driving position seat memory.
3. Start the engine and warm it up to normal operating temperatures before test driving.
4. Perform a thorough test drive with several accelerations from a stop with "light throttle" application until proper transmission shifting is verified.