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.
Section 424 (Troubleshooting): Description: Notes
Description of Each System Mentioned in the DI Section Related to Gateway System.
HINT:
Master control means that the Control ECU becomes a master and controls each electric system.
The sub control system transmits to the Master Control ECU the signals of the switches that are connected to the ECU. It also operates the motor by receiving the command of the Master Control ECU.
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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.