Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Scan Tool Data Definitions



Scan Tool Data Definitions

Auto Learn Timer
- The scan tool displays the seconds used by the BCM to learn valid code from the Passlock(TM) sensor. The learn procedure consists of 3 consecutive periods.

Battery Voltage
- The scan tool displays the battery system voltage.

Content Theft Lamp
- The scan tool displays the state of the SECURITY lamp. The scan tool displays ON when activated by an unauthorized entry.

Content Theft State
- The scan tool displays the state of the content theft feature. The scan tool displays ON when activated by an unauthorized entry.

Door Unlock Switch
- The scan tool displays the state of the door key switch. The scan tool displays ACTIVE when the switch is activated in either door key cylinder.

Drivers Door Ajar Switch
- The scan tool displays the position of the drivers door. The scan tool displays ACTIVE when the drivers door is open.

GM Part Number
- The scan tool displays the part number assigned to the BCM that is currently in the vehicle.

Passenger Door Ajar Switch
- The scan tool displays the position of the passenger door. The scan tool displays ACTIVE when the passenger door is open.

Security Lamp
- The scan tool displays the state of the SECURITY lamp. The scan tool displays ON, OFF or FLASHING.