For 1990-2009 cars

Parameter | Display | Description
--- | --- | ---
CURRENT DTC | BXXXX | The letter B, followed by the number of each cycle DTC and its description stored by the SDM in memory.
IGNITION VOLTS | XX.XX | Voltage between SDM terminals A10 (Ignition 1) and A6 (Ground), 9 to 16 volts for SDM operation.
ADS A/D | XX | Voltage for the energy reserve, approximately 20 volts.
PROM ID | XXXX | Programmable ROM identification number.
CALIBRATION ID | XXXX | SDM calibration identification number.
JULIAN DATE OF BUILD | XXX | Day of the year SDM was built, 0-365
YEAR MODEL BUILT | XXXX | Year SDM was built, use with Julian date.
8 DIGIT PART NUMBER | XXXXXXXX | SDM production or service part number.
COMPONENT SERIAL # | XXXX | First half of the SDMs serial number.
COMPONENT SERIAL # | XXXX | Second half of the SDMs serial number.
DR BELT STATUS | XXXXXXX | Current status of drivers seat belt switch. Buckled or unbuckled.
HISTORY DTCS | BXXXX | The letter B, followed by the number of each history DTC stored by the SDM.