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.
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HOMESERVICE MANUALSCADILLAC1993SEVILLE BASEREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSANTI-THEFT SYSTEM
1993 Cadillac Seville Base
Anti-Theft System
1993 Cadillac Seville BaseSECTION Anti-Theft System
- Description & Operation
- Trouble Shooting
- Testing
- Universal Theft Deterrent (UTD) System Testing - ELDORADO & SEVILLE
- Universal Theft Deterrent (UTD) System Testing - Riviera
- Notes
- SECURITY Indicator Does Not Light (Check No. 1)
- SECURITY Indicator Does Not Light (Check No. 2)
- System Will Not Arm, SECURITY Indicator Flashes After Power Door Lock Switch Is Locked
- System Will Not Arm, SECURITY Indicator Stays On After Door Is Closed
- System Will Not Cancel Arming When Power Door Lock Switch Is Unlocked
- System Will Not Disarm With Door Key
- Alarms Will Not Operate, System Arms
- Theft Deterrent Relay Test
- Some Alarm Features Do Not Operate (Horns & All Lights Work When Operated From Their Switches)
- Alarms Sound With No Tamper Input
- SECURITY Indicator Flashes With Ignition On & A Door Open, Or System Will Not Disarm When Ignition Is Turned On
- Pass-Key System Testing - All Models
- Notes
- SECURITY Indicator Stays Illuminated & Engine Starts
- SECURITY Indicator Stays Illuminated & Engine Does Not Start
- SECURITY Indicator Flashes & Engine Does Not Start
- PASS-Key Diagnostic System Check
- PASS-Key System Verification
- SECURITY Indicator Light Does Not Turn On
- Engine Cranks & Starts, SECURITY Light Stays On
- Engine Cranks But Does Not Start
- Engine Does Not Crank Or Start & SECURITY Indicator Light Comes On & Went Off After About 5 Seconds
- SECURITY Light Either Flashes Or Stays On All The Time
- System Testing
- Removal & Installation
- Wiring Diagrams
RENDER: 1.0x
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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.