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 And Connectors
Check the cable from the fuse in question to Start control module (SCU) #B7 for open circuit, contact resistance and oxidation. The voltage must be approximately battery voltage.
Check the cable from Start control module (SCU) #B8 to Central electronic module (CEM) #B13 (#13) for open circuit, contact resistance and oxidation. If the voltage is 0 V, it should be possible to remove the key.
Remedy as necessary.
Other information
Was a fault detected?
- YES
Refer to VERIFICATION
- NO
Refer to CHECKING START CONTROL MODULE (SCU)
NO RELATED
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.