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Body Control Module Scan Tool Information

Table 1: Body Control Module Scan Tool Data Parameters
Table 2: Body Control Module Scan Tool Output Controls

Body Control Module Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON, Vehicle in Park, All Doors Closed

12 V Battery Current

-

Varies

This displays amps. This numeric value is the battery amperage.

5 V Ignition Switch

-

Run

The scan tool displays Key In, Accessory/Key Out, Crank Request, or Run. This parameter displays the ignition switch mode.

A/C Evaporator Temperature Sensor

-

Varies

This parameter displays the A/C evaporator temperature in degrees F.

Accessory

-

Active

The scan tool displays Active or Inactive. This is the state of the ignition accessory/run.

Accessory Relay Command

-

Active

The scan tool displays Active or Inactive. This is the state of the accessory relay.

Accessory/Retained Accessory Power Relay Command

-

Active

The scan tool displays Active or Inactive. This is the state of the retained accessory power relay.

All Doors Lock Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the door lock status.

Ambient Light Sensor

-

Varies

The scan tool displays volts. This parameter displays the current ambient light sensor signal voltage.

Ambient Light Status

-

Night

The scan tool displays Unknown, Night, or Day. This parameter displays the ambient light level status.

Automatic Headlamps Disable Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the headlamp disable switch status.

Reverse Lamps Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the reverse lamps relay status.

Battery Low at Start

-

No

The scan tool displays Yes or No. This parameter displays Yes when the state of the battery charge is low during cranking.

Battery No-Load Voltage

-

Varies

The parameter displays volts.

Battery No-Load Voltage Tested

-

No

The scan tool displays No or Yes. This parameter displays Yes if the BCM senses an open battery circuit.

Battery Sulfation Mode

-

Inactive

The scan tool displays Active or Inactive. This is the state of the battery sulfation mode.

Battery Voltage

-

Varies

The scan tool displays the current battery voltage in volts. This is the current battery voltage.

Battery Voltage High Resolution

-

Varies

The scan tool displays the current battery voltage in volts.

Brake Lamps Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the stop lamp relay status.

Brake Pedal Position Sensor

-

Varies

The scan tool displays as counts. This numeric value is the current brake pedal position.

Brake Pedal Position Sensor High Voltage During Learn

-

No

The scan tool displays No or Yes. This parameter displays Yes if the brake pedal position sensor was high during the brake pedal position sensor calibration.

Brake Pedal Position Sensor Learn

-

No

The scan tool displays No or Yes. This parameter displays Yes when the brake pedal position sensor has learned.

Brake Pedal Position Sensor Learned Released Position

-

Yes

The scan tool displays No or Yes. This parameter displays Yes when the brake pedal position sensor has learned the home position.

Brake Pedal Position Sensor Low Voltage During Learn

-

No

The scan tool displays No or Yes. This parameter displays Yes if the brake pedal position sensor was low during the brake pedal position sensor calibration.

Brake Pedal Position Sensor Move During Learn

-

No

The scan tool displays No or Yes. This parameter displays Yes if the brake pedal sensor was moved during the brake pedal position sensor calibration.

Brake Pedal Position Sensor Reference

-

Varies

The scan tool displays the brake pedal position as voltage value. This parameter displays the current brake pedal position sensor reference.

Brake Pedal Position Sensor Status

-

Valid

The scan tool displays Valid or Invalid. This parameter displays the current brake pedal position sensor status.

Brake Transmission Shift Interlock Solenoid Actuator Command

-

Inactive

The scan tool displays Active or Inactive. This is the state of the shift lock solenoid.

Calculated 12V Battery Temperature

-

Varies

The scan tool displays the 12V battery temperature in degrees (°C or °F). This is the current estimated battery temperature.

Calculated Brake Pedal Position

-

Varies

The scan tool displays counts. This numeric value is the current brake pedal position.

Content Theft Deterrent Alarm Status

-

Disarmed

The scan tool displays Disarmed, Armed, Arming Delay or Alarm Active. This parameter displays the content theft deterrent system status.

Content Theft Deterrent Indicator

-

Off

The scan tool displays On, Off, Flashing Slow, or Flashing Fast. This is the current state of the theft indicator.

Content Theft Deterrent Trigger History 1-3

-

None

The scan tool displays None, Driver Door, Passenger Door, Left Rear Door, Right Rear Door, Rear Closure, Midgate, Tonneau Cover, Hood, Ignition Voltage, Intrusion, Inclination, Telematics Enhanced Service Alarm, Battery Reconnect Detected, Unauthorized PWM Change, Security Indicates Tamper, or Glass Breakage. This parameter displays the content theft deterrent trigger history status.

Courtesy Lamps Activity Reason

-

Varies

The scan tool displays Off, Panic Alarm, Manual, Post Crash, Door Open, Key Fob, Alarm Active, Door Closed, Exit, or Disabled by Switch. This is the reason for courtesy lamp activation.

Courtesy Lamps Duty Cycle Command

-

Varies

This scan tool displays percent. This parameter displays the current dimming percentage of the courtesy lamps.

Cruise Control LED Dimming Command

-

Varies

This scan tool displays percent. This parameter displays the current dimming percentage of the cruise control indicator of the cruise switch.

Cruise Control Switch Status

-

Cancel

The scan tool displays Off, On, Resume, Set, Error, or Cancel. This parameter displays the current state of the cruise control switch.

Current Content Theft Deterrent Trigger

-

None

The scan tool displays None, Driver Door, Passenger Door, Left Rear Door, Right Rear Door, Rear Closure, Midgate, Tonneau Cover, Hood, Ignition Voltage, Intrusion, Inclination, Telematics Enhanced Service Alarm, Battery Reconnect Detected, Unauthorized PWM Change, Security Indicates Tamper, or Glass Breakage. This parameter displays the content theft deterrent current alarm trigger.

Daytime Running Lamps Relay Command

-

Inactive

The scan tool display Active or Inactive. This parameter displays the daytime running lamps relay status.

Dead Lock Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the dead lock relay status.

Desire Battery Voltage

-

Varies

The scan tool displays volts. This parameter displays the desired battery voltage.

Dimming Control Knob Reference Voltage

-

Varies

The scan tool displays volts. This parameter displays the dimming control reference voltage.

Dimming Control Knob Signal

-

Varies

The scan tool displays volts. This parameter displays the dimming control signal voltage.

Door Lock Requestor

-

Varies

The scan tool displays Central Door Lock Switch, Door Key Cylinder, Rear Closure, Crash Event Unlock, Key Fob, Telematics, Door Lockout Protection, Exterior Lock Switch Circuit, or Automatic Door Lock. This parameter displays the current state of the door lock request as monitored by the BCM.

Driver Door Ajar Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the driver door ajar switch status.

Driver Door Key Lock Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the driver door key lock switch status.

Driver Door Key Unlock Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the driver door key unlock switch status.

Driver Door Lock Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the driver door lock switch status.

Driver Door Unlock Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the driver door unlock command status.

Driver Door Unlock Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the driver door unlock switch status.

Driver Door Open Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the driver door open switch status.

Driver Shift Control Mode Switch

-

Off

The scan tool displays On, Off, Up, Down, or Error. This parameter displays the transmission tap up tap down switch status.

Front Fog Lamps Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the front fog light relay status.

Front Fog Lamps Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the front fog lamp switch status.

Fuel Economy Mode

-

Active

The scan tool displays Active or Inactive. This parameter displays the fuel economy mode status.

Generator Regulator Setpoint

-

Varies

The scan tool displays percent. This parameter displays the set point of the voltage regulator.

Hazard Lamps Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the hazard lamps switch status.

Headlamp Washer Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the headlamp washer relay status.

Headlamps Flash Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the headlamp flash to pass switch status.

Headlamps On Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the headlamp switch status.

High Beam Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the high beam relay status.

High Beam Select Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the main beam select switch status.

High Speed Communication Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the status of the high speed communications command of the BCM.

Bonnet Ajar Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the bonnet ajar switch status.

Horn Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the horn relay status.

Idle Boost Level 2-3 Counter

-

Varies

The scan tool displays a numeric value. This parameter displays the state of the idle boost level.

Ignition Switch Reference

-

Varies

The scan tool displays volts. This parameter displays the current off/run/crank reference voltage.

Ignition Switch Signal Voltage

-

Varies

The scan tool displays volts. This parameter displays the current off/run/crank signal voltage.

Incandescent Dimming Command

-

Varies

The scan tool displays percent. This parameter displays the current incandescent dimming percentage.

Interior Liftgate Window Unlatch Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the interior trunk or liftglass release switch.

Key In Ignition Lock Signal

-

Key In

The scan tool displays Key Out or Key In. This parameter displays the state of the key in ignition.

LED Backlight Dimming Command

-

Varies

The scan tool displays percent. This parameter displays the current LED backlight dimming percentage.

Left Front Indicator Lamp Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the left front turn signal.

Left Rear Indicator Lamp Command

-

Inactive

The scan tool displays Active or Inactive. The parameter displays the state of the left rear turn signal.

Left Indicator Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the left indicator switch status.

Liftgate Handle Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the liftgate handle switch.

Liftgate Unlatch Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the liftgate unlatch status.

Liftgate Window Unlatch Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the liftgate window unlatch status.

Low Beam Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the headlamp low beam relay status.

Park Lamps Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the park lamp relay status.

Park Lamps Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays Active when the parklamp switch is activated.

Passenger Door Ajar Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the passenger door ajar switch status.

Passenger Door(s) Unlock Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the passenger door unlock status.

Powertrain High Speed Communication Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the powertrain high speed communications command.

Previous State of Charge

-

Varies

The scan tool displays percent. This parameter displays the previous state of charge of the battery.

Rain Sensor Signal

-

Off

The scan tool displays Off, Low, High, Sensor Fault Detected, Circuit Low Voltage, Circuit High Voltage, No Glass Detected, Data Access Error, or Internal Malfunction. This parameter displays the state of the rain sensor signal.

Rear Closure Ajar Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the rear closure ajar switch.

Rear Closure Cylinder Unlock Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the rear closure cylinder unlock switch.

Rear Defogger LED Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the rear defogger LED.

Rear Demister Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the rear defogger relay.

Rear Fog Lamps Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the rear fog lamp relay.

Rear Fog Lamps Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the rear fog lamp switch.

Right Front Indicator Lamp Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the right front turn signal.

Right Rear Indicator Lamp Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the right rear turn signal.

Right Indicator Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the right indicator switch status.

Run Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the run relay.

Run/Crank

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the ignition run/crank.

Run/Crank Relay Command

-

Active

The scan tool displays Active or Inactive. This parameter displays the state of the ignition run/crank relay.

Startup State of Charge

-

Varies

The scan tool displays percent. This parameter displays the last state of charge of the battery at startup.

State of Charge

-

Varies

The scan tool displays percent. This parameter displays the current state of charge of the battery.

Steering Wheel Controls Group 1 Status

-

Idle

The scan tool displays Idle or Switch 1-10. This parameter displays the state of the steering wheel controls bank 1.

Steering Wheel Controls Group 2 Status

-

Idle

The scan tool displays Idle or Switch 1-10. This parameter displays the state of the steering wheel controls bank 2.

System Power Mode

-

Run

The scan tool displays Off, Accessory, Run or Crank Request. This parameter displays the state of the ignition switch.

Traction Control Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays Active when the traction control switch is active.

Vehicle Battery Low

-

No

The scan tool displays Yes or No. This parameter displays Yes if the state of charge of the battery is low.

Windscreen Washer Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the windscreen washer relay status.

Windscreen Washer Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the windscreen washer switch status.

Windshield Wiper Delay

-

Varies

The scan tool displays a numeric value. This parameter displays the wiper delay setting.

Windscreen Wiper High Speed Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the wiper high speed relay.

Windscreen Wiper High Speed Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the wiper high speed switch.

Windscreen Wiper Motor Relay Command

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the windshield wiper relay status.

Windscreen Wiper Park Switch

-

Inactive

The scan tool displays Active or Inactive. This parameter displays the state of the wiper park switch.

Windscreen Wiper Switch

-

Off

The scan tool displays Off, Intermittent, Low, High, or Malfunctioned. This parameter displays the windscreen wiper switch status.

Body Control Module Scan Tool Output Controls

Output Control

Description

Accessory/Retained Accessory Power Relay

The BCM actuates the retained accessory power relay when you select On. The retained accessory power relay should turn on allowing specific vehicle functions to operate.

All Doors Lock

The BCM activates all doors lock when you select Lock. All doors should lock.

Reverse Lamps

The BCM actuates the reverse lamps relay when you select On. The reverse lamps should illuminate until commanded Off. Engine must be running.

Brake Pedal Position Sensor Learn

The BCM activates the brake pedal position sensor learn when you select Learn. The brake pedal position sensor learn procedure should start.

Courtesy Lamps

The BCM activates the courtesy lamps when you select On. The value should be 100%. The courtesy lamps should illuminate until commanded Off.

Daytime Running Lamps

The BCM activates the daytime running lamps when you select On. The daytime running lamps should illuminate until commanded Off.

Driver Door Unlock

The BCM pulses the driver door unlock motor when you select Unlock. The driver door should unlock.

Front Fog Lamps

The BCM actuates the front fog lamps relay when you select On. The front fog lamps relay should turn on.

High Beams

The BCM activates the high beam command when you select On. The high beam lights should illuminate. The headlamps have to be on.

Horn Relay

The BCM activates the horn when you select On. The horn should sound.

Incandescent Dimming

The BCM dims the incandescent dimming from 0-100 percent when you select INCREASE or DECREASE by 20 percent increments.

LED Backlight Dimming

The BCM dims the LED backlight dimming from 0-100 percent when you select INCREASE or DECREASE by 20 percent increments.

Left Front Indicator Lamp

The BCM activates the left front indicator lamp when you select On. The left front indicator lamp should illuminate until commanded Off.

Left Rear Turn Signal Lamp

The BCM activates the left rear indicator lamp when you select On. The left rear indicator lamp should illuminate until commanded Off.

Liftgate Window Unlatch

This output control is used to command the liftglass switch On and Off.

Dipped Beam Lamps

The BCM activates the dipped beams when you select On. The dipped beam lights should turn on.

Park Lamps

The BCM activates the parking lamps when you select On. The parking lamps should illuminate.

Passenger Door(s) Unlock

The BCM pulses the passenger door unlock motor when you select Unlock. The passenger door should unlock.

Rear Body Closure Unlatch

The BCM actuates the rear compartment lid release actuator when you select Unlatch. The trunk or liftgate should open.

Rear Demister

This output control is used to command the rear defogger On and Off.

Rear Fog Lamps

This output control is used to command the rear fog lamps On and Off.

Right Front Indicator Lamp

The BCM activates the right front indicator lamp when you select On. The right front indicator lamp should illuminate.

Right Rear Turn Signal Lamp

The BCM activates the right rear turn signal lamp when you select On. The right rear turn signal lamp should illuminate until commanded Off.

Run/Crank Relay

The BCM actuates the run/crank relay when you select On. The run/crank relay should turn on.

Setup SDM Part Number in BCM

This output control is used to set up the SDM primary key into the BCM.

Shift Lock Solenoid Actuator

This output control is used to command the shift lock solenoid On and Off.

Windscreen Washer Motor

The BCM actuates the windshield washer motor when you select On. The windshield washer should turn on.

Windshield Wiper High Speed Relay

The BCM actuates the windscreen wiper high speed relay when you select On. The windscreen wiper high speed relay should turn on.

Windshield Wiper Motor Relay

The BCM actuates the windscreen wiper motor relay when you select On. The windscreen wiper motor relay should turn on.

   


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