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.
Repair Procedure: Adjustment
ECM Neutral Mode Procedure
- After replacing the ECM of the vehicle with the immobilizer, the following procedure must be performed.
[If installing a used ECM]
- Perform "ECM Neutral Mode " procedure using GDS. (Refer to IMMOBILIZER SYSTEM REPAIR PROCEDURES Body Electrical System - "Immobilizer System - Repair Procedure")
- After finishing "ECM Neutral Mode", perform
"Key Teaching" procedure using GDS. (Refer to appropriate service information.
- Repair Procedure")
[If installing a new ECM]
Perform "Key Teaching" procedure using GDS. (Refer to IMMOBILIZER SYSTEM REPAIR PROCEDURES
- After replacing the ECM of the vehicle with the smart key system (button start), the following procedure must be performed.
[If installing a used ECM]
- Perform "ECM Neutral Mode " procedure using GDS. (Refer to REPAIR PROCEDURES
- After finishing "ECM Neutral Mode", turn IGN ON then OFF using the smart key or start button. Then the ECM learns information on the smart key automatically.
[If installing a new ECM]
Turn IGN ON then OFF using the smart key or start button. Then the ECM learns information on the smart key automatically.
TCM Learning Procedure
- Perform TCM learning after replacing the PCM.
(Refer to Automatic Transaxle Control System - "ADJUSTMENT ")
ETC Module Learning Procedure
- Perform ETC module learning after replacing the ETC module.
(Refer to Electronic Throttle Control System - "ADJUSTMENT ")
VIN Programming Procedure
VIN (Vehicle Identification Number) is a number that has the vehicle's information (Manufacturer, Vehicle Type, Vehicle Line/Series, Body Type, Engine Type, Transmission Type, Model Year, Plant Location and so forth). For more information, please refer to the group "GI" in this SERVICE INFORMATION DOCUMENT). When replacing an ECM, the VIN must be programmed in the ECM. If there is no VIN in ECM memory, the fault code (DTC P0630) is set.
- Select "VIN Writing" function in "Vehicle S/W Management".
- Select "Write VIN" in "ID Resister".
- Input the VIN.WARNING: Before inputting the VIN, double check the VIN as it cannot be changed once programmed.
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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.
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