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.
Checking wiring
Check the signal cable between engine control module (ECM) terminal #10 and system relay terminal #2. Check for an intermittent short-circuit to ground Short-circuit to ground, intermittent faults . Check for an open-circuit according to Open-circuit, intermittent faults . Remedy if necessary.
Try a new system relay if no fault is found during the above fault-tracing.
Other information
- To connect the breakout box, see Connecting the breakout box. EMS 2000 .
Use the Manual With the Right Hardware
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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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