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.
Diagnostic Aids
A poor connection at the B+ terminal of the APM or blown 200 Amp Mega-Fuse in the hybrid BEC will prevent the APM from powering up and all values in the APM data list will read zero on the scan tool.
A poor connection on the APM wake-up signal X1 Terminal 3 from the SDGM will also prevent the APM from powering up and all data values in the APM data list will read zero on the scan tool.
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.