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.
Self-Diagnostic System: Notes
Begin diagnosis of body control system by performing appropriate diagnostic system check for system in which customer concern is apparent. See DIAGNOSTIC SYSTEM CHECK table.
| System | Perform Test |
|---|---|
| Anti-Lock Brakes | ANTI-LOCK BRAKE SYSTEM DIAGNOSTIC SYSTEM CHECK |
| Automatic Transmission | AUTOMATIC TRANSMISSION DIAGNOSTIC SYSTEM CHECK |
| Cruise Control | CRUISE CONTROL SYSTEM DIAGNOSTIC SYSTEM CHECK |
| Engine Controls | ENGINE CONTROLS DIAGNOSTIC SYSTEM CHECK |
| Engine Cooling | ENGINE COOLING SYSTEM DIAGNOSTIC SYSTEM CHECK |
| Engine Electrical | ENGINE ELECTRICAL SYSTEM DIAGNOSTIC SYSTEM CHECK |
| Entertainment System | ENTERTAINMENT SYSTEM DIAGNOSTIC SYSTEM CHECK |
| Instrument Cluster | INSTRUMENT PANEL CLUSTER DIAGNOSTIC SYSTEM CHECK |
| Theft Deterrent | THEFT DETERRENT SYSTEM DIAGNOSTIC SYSTEM CHECK |
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no 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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.