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.
2002 Jeep Wrangler X, AutomaticFACTORY OEM SERVICE PROCEDURE
Sentry Key Immobilizer System Verification Test
- Reconnect all disconnected components and connectors.
- Obtain vehicle's unique Personal Identification Number (PIN) assigned to it's original Sentry Key Immobilizer Module (SKIM) from vehicle owner or Chrysler's customer center.
- Use care when entering PIN. If secured access mode is attempted 3 times using incorrect PIN, secured access mode will be locked out for one hour and scan tool will display BUS +/- SIGNALS OPEN.
- To exit lock out, turn ignition switch on for one hour. Ensure all accessories are turned off. Monitor battery state and connect battery charger as necessary.
- Using scan tool, select THEFT ALARM, SKIM, then MISCELLANEOUS. Select desired procedure and follow on-screen instructions.
- If SKIM was replaced, program all customer keys into SKIM's memory.
- Erase all DTCs after repairs. Turn ignition on. Wait 90 seconds. Turn ignition off. Repeat ignition cycle 5 times. Recheck for DTCs. If no DTCs exist, repair is complete. If any DTCs exist, diagnose and repair system as necessary. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table under SELF-DIAGNOSTIC SYSTEM.
Factory Service Tools
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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.
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