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 MANUALSCADILLAC1997SEVILLE SLS V8-4.6L VIN YREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULEDESCRIPTION AND OPERATIONBODY CONTROL SYSTEM CIRCUIT DESCRIPTIONLIGHTING CONTROLEXTERIOR LIGHTING CONTROL
1997 Cadillac Seville SLS V8-4.6L VIN Y
Exterior Lighting Control
1997 Cadillac Seville SLS V8-4.6L VIN YSECTION Exterior Lighting Control
The PZM controls exterior lighting which includes the following:
^ Low Beams and Parklamps
^ High Beams
^ Daytime Running Lamps
^ Foglamps
^ Backup Lamps
^ Rear Foglamps (export only)
All lamp on or off requests are sent by the IPC on the Class 2 serial data line to the PZM, except m the case of theft deterrent activation which is controlled only by the PZM.
^ Low Beams and Parklamps
^ High Beams
^ Daytime Running Lamps
^ Foglamps
^ Backup Lamps
^ Rear Foglamps (export only)
All lamp on or off requests are sent by the IPC on the Class 2 serial data line to the PZM, except m the case of theft deterrent activation which is controlled only by the PZM.
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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.