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 procedures: Removal
When replacing the ECM, the vehicle equipped with the immobilizer must be perform following procedures:
[In the case of installing used ECM]
- Perform "ECM Neutral mode" procedure with GDS. (Refer to "IMMOBILIZER SYSTEM ")
- After finishing "ECM Neutral mode", perform "Key teaching" procedure with GDS. (Refer to "IMMOBILIZER SYSTEM ")
[In the case of installing new ECM]
Perform "Key teaching" procedure with GDS. (Refer to "IMMOBILIZER SYSTEM ")
- Turn ignition switch OFF and disconnect the negative (-) battery cable.
- Disconnect the ECM Connector (A).
- Remove the battery (Refer to "CHARGING SYSTEM ").
- Remove the mounting bolts and nut, and then remove the ECM bracket assembly (A).
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.