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.
Main Relay
Upon receiving the wake up signal from the ignition switch, KL15 supplying power to fuse 34, the EMS2000 provides a switched ground signal via Pin 97 to the Main Relay. This energizes the Main Relay, providing operating power to the EMS2000. Output of the Main Relay is monitored so that if the relay is energized and the power is not received by the EMS2000 a fault code is set.
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.
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