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)

Or, hide this message: temporarily or permanently

Scan Tool Data Definitions



Scan Tool Data Definitions

Body Control Module (BCM)

Battery Voltage
- Display indicates battery voltage. Measured in volts.

Shift Lock Solenoid Command
- Displays indicates ACTIVE when the brake switch is depressed on Floor Shift.

Shift Lock Solenoid Command
- Displays indicate INACTIVE when the brake switch is depressed on Column Shift.

Ignition 1 Signal
- Display indicates ON when the ignition 1 input circuit of the module receives a battery signal from the ignition switch.

Remote Start
- Display indicates the current status of the remote start request.

Engine Control Module (ECM)

Current Gear
- Displays current gear position of the transmission

TCC Brake Switch
- Displays ON or OFF status of the TCC Brake switch.

Reverse Inhibit Solenoid Circuit Status
- Displays OK, Incomplete, Short B+, Short Gnd, Open.

Reverse Inhibit Solenoid Command
- Displays Not Equipped / ON / OFF

TR Sw. A/B/C/P
- Displays LOW or HI for the state of each of the four inputs from the IMS. LOW displayed indicates a low voltage signal (0 volts) being monitored at the ECM. HI displayed indicates a high voltage signal (B+) being monitored at the ECM.