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.
Circuit Description
The Diagnostic System Check is an organized approach to identify a condition created by the rear axle controls. The Diagnostic System Check is the starting point for a rear axle controls complaint. The Diagnostic System Check directs you to the next logical step for diagnosing a rear axle control concern. Perform this check only if there is a driveability complaint or if you have been directed here from another service information section. Follow the table to help reduce diagnostic time and help prevent unnecessary replacement of parts.
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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.