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.
Test Phases, Quick Test Fuel Tank System: Reference
The reference phase for leaks and the function test of the leak diagnostic unit are running. If no faults are detected during this phase the leak test in the fuel tank system starts. If any faults are detected during the phase, the test is interrupted and the test result for the leak diagnostic unit (ECM-436X) will be "Fault found".
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.