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.
BCM: Diagnosis Procedure
- CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Terminal No. Signal name Fuse and fusible link No. 1 Battery power supply K (40A) 11 10 (10A) Is the fuse fusing?
YES: Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is blown.
NO: GO TO 2.
- CHECK POWER SUPPLY CIRCUIT
- CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
BCM Ground Continuity Connector Terminal M119 13 Existed Does continuity exist?
YES: INSPECTION END
NO: Repair harness or connector.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.