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.
2001 Plymouth Neon Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Sentry Key Immobilizer Module: Notes
NOTE:
These are basic system checks. For full diagnosis, use Chrysler's Diagnostic Readout Box (DRBIII(R)) scan tool. For scan tool testing, see BODY CONTROL MODULES - NEON article. Self-diagnostic tests are written specifically for DRBIII(R) scan tool. A generic scan tool may not be capable of performing all necessary test functions.
Factory Service Tools
Use the Manual With the Right Hardware
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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.