Operation CHARM: Car repair manuals for everyone.

Scan Tool Data Definitions

8 Digit GM Part Number: The scan tool displays the eight digit pan number of the control module selected.

Battery Voltage: The scan tool displays 9.0-15.0 volts. The state of the battery voltage supplied to the control module selected.

Calibration ID: The scan tool displays the calibration or program revision level used in the PROM of the control module selected.

Component Serial # 8-11: The scan tool displays digits 8 through 11 of the BCM serial number.

Component Serial # 12: The scan tool displays digit 12 of the BCM serial number.

Component Serial # 13-1: The scan tool displays digits 13 through 16 of the BCM serial number.

Component Serial # 17-1: The scan tool displays digits 17 and 18 of the BCM serial number.

Door Jamb Switch: The scan tool displays On/Off. The passenger door jamb switch input to the BCM, where an open door is displayed as On.

Door Key Cyl. Unlock Sw.: The scan tool displays On/Off. The driver or passenger door key cylinder input to the BCM, where the key cylinder transition to the Unlock position is displayed as On.

Door Lock Output: The scan tool displays On/Off. The driver or passenger door lock switch output from the BCM where the switch transition to the Lock position is displayed as On.

Door Lock Switch: The scan tool displays Idle/Lock/Unlock. The driver or passenger door lock switch input to the BCM, where the switch transition to the Lock or Unlock positions are displayed as Lock and Unlock.

Door Unlock Output: The scan tool displays On/Off. The passenger door lock switch output from the BCM, where the switch transition to the Unlock position is displayed as On.

Driver Door Ajar Sw.: The scan tool displays On/Off. The driver door lock switch input to the BCM, where an open door is displayed as On.

Driver Door Jamb Sw.: The scan tool displays On/Off. The driver door jamb switch input to the BCM, where an open door is displayed as On.

Driver Unlock Output: The scan tool displays On/Off. The driver door lock switch output from the BCM, where the switch transition to the Unlock position is displayed as On.

Fuel Level: The scan tool displays gallons. The scan tool displays the number of gallons remaining in the fuel tank as seen by the BCM.

Ignition Counter: The scan tool displays the number of ignition switch transitions as seen by the BCM.

Julian Date Of Build: The scan tool displays a four digit number representing the day of the year the module selected was built.

Left Mirror Outputs: The scan tool displays Idle/Left/Right/Up/Down. The mirror switch output from the MMM, indicating which direction the driver mirror is being commanded to move.

Left Mirror Switches: The scan tool displays Idle/Left/Right/Up/Down. The mirror switch input to the MMM, indicating which direction the driver mirror should be commanded to move.

Lt. Horiz. Mirror Pos.: The scan tool displays 0.25-4.75 volts. The driver mirror position sensor feedback voltage to the MMM.

Lt. Vertical Mirror Pos.: The scan tool displays 0.25-4.75 volts. The driver mirror position sensor feedback voltage to the MMM.

Memory Recall Switches: The scan tool displays Idle/Memory 1/Memory 2/Exit. The memory function switch input to the MMM, indicating which memory function is currently being recalled.

Passenger Door Ajar Sw.: The scan tool displays On/Off. The passenger door lock switch input to the BCM, where an open door is displayed as On.

PROM ID: The scan tool displays the four digit number of the PROM incorporated into the the control module selected.

Real Time Clock Hours: The scan tool displays a number representing the current hour of the day.

Real Time Clock Minutes: The scan tool displays a number representing the current minute of the hour.

Real Time Clock Seconds: The scan tool displays a number representing the current second of the minute.

Rear Defog Output: The scan tool displays On/Off. The rear defogger relay output from the BCM, where the relay being actuated is displayed as On.

Right Mirror Outputs: The scan tool displays Idle/Left/Right/Up/Down. The mirror switch output from the MMM, indicating which direction the passenger mirror is being commanded to move.

Right Mirror Switches: The scan tool displays Idle/Left/Right/Up/Down The mirror switch input to the MMM, indicating which direction the passenger mirror should be commanded to move.

Rt. Horiz. Mirror Pos.: The scan tool displays 0.25-4.75 volts. The passenger mirror position sensor feedback voltage to the MMM.

Rt. Vertical Mirror Pos.: The scan tool displays 0.25-4.75 volts. The passenger mirror position sensor feedback voltage to the MMM.

Year Module Built: The scan tool displays the four digit year of build of the control module selected.