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.
DTC PZ2719, UTD - Trunk Tamper Switch Fault: Testing
1996 Cadillac Seville STSSECTION Testing
- Turn ignition switch to OFF position. Disconnect PZM connector. Using DVOM, measure resistance between PZM connector terminal A3 and ground. If resistance is greater than 5 ohms, replace PZM. If resistance is 5 ohms or less, go to next step.
- Disconnect trunk tamper switch connector. Using DVOM, measure resistance between trunk tamper switch connector terminal "A" and ground. If resistance is greater than 5 ohms, replace trunk tamper switch. If resistance is 5 ohms or less, repair short to ground in trunk tamper input circuit between trunk tamper switch and PZM.
RENDER: 1.0x
NO RELATED
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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.