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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2009YARIS L4-1.5L (1NZ-FE)REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINTRANSMISSION CONTROL SYSTEMSTESTING AND INSPECTIONPROGRAMMING AND RELEARNING
2009 Toyota Yaris L4-1.5L (1NZ-FE)
Programming and Relearning
2009 Toyota Yaris L4-1.5L (1NZ-FE)SECTION Programming and Relearning
U340E AUTOMATIC TRANSAXLE: AUTOMATIC TRANSAXLE SYSTEM: INITIALIZATION
INITIALIZATION
1. RESET MEMORY
NOTICE:
- Perform the RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM.
- The RESET MEMORY can only be performed using a Techstream.
HINT: The ECM stores the conditions that the ECT controls the automatic transaxle assembly and engine assembly in accordance with those characteristics. Therefore, when the automatic transaxle assembly, engine assembly, or ECM is replaced, it is necessary to reset the memory so that the ECM can store the new information.
The reset procedure is as follows.
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and turn the tester on.
(d) Select the following items: Powertrain / Engine and ECT / Utility / Reset Memory.
CAUTION: After performing the RESET MEMORY, be sure to perform the ROAD TEST Road Test as described earlier.
HINT: The ECM stores learned values by performing the ROAD TEST.
(1) Tester menu flow:
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.