Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2003MATRIX XRS 2WD L4-1.8L (2ZZ-GE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSENGINE/TRANSMISSION CONTROLS - RESETTING ECM MEMORY
2003 Toyota Matrix XRS 2WD L4-1.8L (2ZZ-GE)
Engine/Transmission Controls - Resetting ECM Memory
2003 Toyota Matrix XRS 2WD L4-1.8L (2ZZ-GE)SECTION Engine/Transmission Controls - Resetting ECM Memory
TRANSMISSION & CLUTCH
TC002-03
REVISED
Title:
ECM RESET MEMORY FUNCTION
Models:
'00 - '05 All Models
June 10, 2003
TSB REVISION NOTICE:
^ December 20, 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.
^ January 16, 2004: Tundra vehicles were added to the Applicable Vehicles chart.
^ December 17, 2003: T-100 vehicles were removed from the Applicable Vehicles chart.
Previous versions of this TSB should be discarded.
Introduction
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 minimize subsequent performance concerns.
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 vehicles with Electronically Controlled Automatic Transmissions:
Refer to Reset Procedure 2 for the 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 below.
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.
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.
TC002-03
REVISED
Title:
ECM RESET MEMORY FUNCTION
Models:
'00 - '05 All Models
June 10, 2003
TSB REVISION NOTICE:
^ December 20, 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.
^ January 16, 2004: Tundra vehicles were added to the Applicable Vehicles chart.
^ December 17, 2003: T-100 vehicles were removed from the Applicable Vehicles chart.
Previous versions of this TSB should be discarded.
Introduction
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 minimize subsequent performance concerns.
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 vehicles with Electronically Controlled Automatic Transmissions:
Refer to Reset Procedure 2 for the 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 below.
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.
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.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.