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 MANUALSCADILLAC2002ELDORADO V8-4.6L VIN YREPAIR AND DIAGNOSISLIGHTING AND HORNSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS
2002 Cadillac Eldorado V8-4.6L VIN Y
Scan Tool Data Definitions
2002 Cadillac Eldorado V8-4.6L VIN YSECTION Scan Tool Data Definitions
8 Digit GM Part Number: Displays the part number for the control module.
Battery Voltage: Displays 0 to 25.5 volts. The battery voltage level at the module.
Calibration ID: Displays the calibration ID for the control module.
Component Serial #8-11: Digits 8 to 11 of the component serial number of the control module.
Component Serial #12: Digit 12 of the component serial number of the control module.
Component Serial #13-16: Digits 13 to 16 of the component serial number of the control module.
Component Serial #17-18: Digits 17 to 18 of the component serial number of the control module.
Controlled Power: The scan tool displays On/Off. The commanded state of the controlled power terminal.
Door Jamb Switch: The scan tool displays On/Off. The input of the passenger door open switch, where a closed switch (passenger door open) is displayed as On.
Door Key Cylinder Unlock Switch: The scan tool displays On/Off. The input of the driver and passenger door lock cylinder switches, where a closed switch (driver or passenger door unlocked) is displayed as On.
Driver Door Jamb Switch: The scan tool displays On/Off. The input of the driver door open switch, where a closed switch (driver door open) is displayed as On.
D. R. L. Output: The scan tool displays On/Off. The commanded state of the DRL relay.
Exterior Lamp Output: The scan tool displays On/Off. The commanded state of the exterior lamp control terminal.
Front Fog Lamp Relay: The scan tool displays On/Off. The commanded state of the front fog lamp relay.
Front Fog Lamp Switch: The scan tool displays On/Off. The input of the front fog lamps switch, where a closed switch is displayed as On.
Head Lamp Switch: The scan tool displays On/Off. The status of the headlamp switch.
High Beam Output: The scan tool displays On/Off. The commanded state of the high beam control terminal.
High Beam Switch: The scan tool displays On/Off. The Instrument Cluster (IPC) uses this input to determine when to request the high beam headlamps to be activated.
Inadvertent Power Output: The scan tool displays On/Off. The commanded state of the inadvertent power control terminal.
Incandescent Dim #1: The scan tool displays 0-255 counts. The percentage of dimming sent to the incandescent lamps.
Incandescent Dim #2: The scan tool displays 0-255 counts. The percentage of dimming sent to the incandescent lamps.
Incandescent Dim Pot: The scan tool displays 0-255 counts. The interior dimmer switch input signal.
Interior Lamp Switch: The scan tool displays On/Off. The input of the interior lamps switch, where a closed switch is displayed as On.
Interior Lamp Output: The scan tool displays On/Off. The commanded state of the interior lamp relay.
Julian Date of Build: The scan tool displays year and day. The first digit indicates the last digit of the year that the control module was built. The remaining 3 digits indicate the day of the year that the control module was built.
Last 4 Digits of Part #: The scan tool displays the last 4 digits of the control module part number.
Left Turn Signal Indicator: The scan tool displays On/Off. The status of the Left Turn Signal. The Instrument Cluster uses this input to determine when to flash the left turn signal indicator.
Low Beam Output: The scan tool displays On/Off. The commanded state of the low beams control terminal.
Park Lamp Switch: The scan tool displays On/Off. The input of the park lamps switch, where a closed switch is displayed as On.
Park Lamp Relay Output: The scan tool displays On/Off. The commanded state of the park lamp relay.
PROM ID: The scan tool displays the PROM ID for the control module.
Reverse Relay Output: The scan tool displays On/Off. The commanded state of the reverse lamp relay.
Right Turn Signal Indicator: The scan tool displays On/Off. The status of the right turn signal. The Instrument Cluster uses this input to determine when to flash the right turn signal indicator.
Twilight Delay: The scan tool displays 0-255 counts. The twilight delay control input signal.
Twilight Photo: The scan tool displays 0-255 counts. The ambient light sensor input signal.
Twilight Switch: The scan tool displays On/Off. The input of the twilight enable switch, where a closed switch is displayed as Off.
Year Module Built: Displays the year that the control module was built.
Battery Voltage: Displays 0 to 25.5 volts. The battery voltage level at the module.
Calibration ID: Displays the calibration ID for the control module.
Component Serial #8-11: Digits 8 to 11 of the component serial number of the control module.
Component Serial #12: Digit 12 of the component serial number of the control module.
Component Serial #13-16: Digits 13 to 16 of the component serial number of the control module.
Component Serial #17-18: Digits 17 to 18 of the component serial number of the control module.
Controlled Power: The scan tool displays On/Off. The commanded state of the controlled power terminal.
Door Jamb Switch: The scan tool displays On/Off. The input of the passenger door open switch, where a closed switch (passenger door open) is displayed as On.
Door Key Cylinder Unlock Switch: The scan tool displays On/Off. The input of the driver and passenger door lock cylinder switches, where a closed switch (driver or passenger door unlocked) is displayed as On.
Driver Door Jamb Switch: The scan tool displays On/Off. The input of the driver door open switch, where a closed switch (driver door open) is displayed as On.
D. R. L. Output: The scan tool displays On/Off. The commanded state of the DRL relay.
Exterior Lamp Output: The scan tool displays On/Off. The commanded state of the exterior lamp control terminal.
Front Fog Lamp Relay: The scan tool displays On/Off. The commanded state of the front fog lamp relay.
Front Fog Lamp Switch: The scan tool displays On/Off. The input of the front fog lamps switch, where a closed switch is displayed as On.
Head Lamp Switch: The scan tool displays On/Off. The status of the headlamp switch.
High Beam Output: The scan tool displays On/Off. The commanded state of the high beam control terminal.
High Beam Switch: The scan tool displays On/Off. The Instrument Cluster (IPC) uses this input to determine when to request the high beam headlamps to be activated.
Inadvertent Power Output: The scan tool displays On/Off. The commanded state of the inadvertent power control terminal.
Incandescent Dim #1: The scan tool displays 0-255 counts. The percentage of dimming sent to the incandescent lamps.
Incandescent Dim #2: The scan tool displays 0-255 counts. The percentage of dimming sent to the incandescent lamps.
Incandescent Dim Pot: The scan tool displays 0-255 counts. The interior dimmer switch input signal.
Interior Lamp Switch: The scan tool displays On/Off. The input of the interior lamps switch, where a closed switch is displayed as On.
Interior Lamp Output: The scan tool displays On/Off. The commanded state of the interior lamp relay.
Julian Date of Build: The scan tool displays year and day. The first digit indicates the last digit of the year that the control module was built. The remaining 3 digits indicate the day of the year that the control module was built.
Last 4 Digits of Part #: The scan tool displays the last 4 digits of the control module part number.
Left Turn Signal Indicator: The scan tool displays On/Off. The status of the Left Turn Signal. The Instrument Cluster uses this input to determine when to flash the left turn signal indicator.
Low Beam Output: The scan tool displays On/Off. The commanded state of the low beams control terminal.
Park Lamp Switch: The scan tool displays On/Off. The input of the park lamps switch, where a closed switch is displayed as On.
Park Lamp Relay Output: The scan tool displays On/Off. The commanded state of the park lamp relay.
PROM ID: The scan tool displays the PROM ID for the control module.
Reverse Relay Output: The scan tool displays On/Off. The commanded state of the reverse lamp relay.
Right Turn Signal Indicator: The scan tool displays On/Off. The status of the right turn signal. The Instrument Cluster uses this input to determine when to flash the right turn signal indicator.
Twilight Delay: The scan tool displays 0-255 counts. The twilight delay control input signal.
Twilight Photo: The scan tool displays 0-255 counts. The ambient light sensor input signal.
Twilight Switch: The scan tool displays On/Off. The input of the twilight enable switch, where a closed switch is displayed as Off.
Year Module Built: Displays the year that the control module was built.
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.