Data
Backlight Dimming: The scan tool displays the duty cycle
of the pulse width modulated (PWM) signal distributed by the BCM to the PWM
controlled IP backlighting based on the postion of the IP dimmer switch
(Thumbwheel). The scan tool displays 0 percent when the headlamp
switch is in the AUTO position and the daytime running lamps (DRL)
are ON or the IP dimmer switch is in the FULL DIM position. The scan tool
displays approximately 85 percent when either the low beam headlamps
or park lamps are activated and the IP dimmer switch is in the FULL BRIGHT
position.
Battery 1: The scan tool displays the battery system voltage
received by the module.
Battery 2: The scan tool displays the battery system voltage
received by the module.
Battery Voltage: The scan tool displays the battery system
voltage.
Dimming Input: The scan tool displays the voltage value
indicating the position of the IP dimmer switch (thumbwheel). The scan tool
displays 4 volts when the headlamp switch is in the AUTO position
and the daytime running lamps (DRL) are ON or the IP dimmer switch
is in the FULL DIM position. The scan tool displays 0 volts when either
the park lamps or the headlamps are turned ON and the IP dimmer switch
is in the FULL BRIGHT position.
Dimming Level: The scan tool displays the duty cycle of
the pulse width modulated (PWM) signal distributed by the BCM to the interior
lighting circuits. The scan tool displays 0 percent when the
interior lamps illumination is OFF. The scan tool displays 100 percent
when the interior lamp illumination is at full intensity.
Dimming Potentiometer: The scan tool displays the duty
cycle of the pulse width modulated (PWM) signal distributed by the BCM to
the PWM controlled door switch backlighting based on the postion of the
IP dimmer switch (Thumbwheel). The scan tool displays 0 percent
when the headlamp switch is in the AUTO position and the daytime running
lamps (DRL) are ON or the IP dimmer switch is in the FULL DIM position.
The scan tool displays 100 percent when either the headlamps or
park lamps are activated and the IP dimmer switch is in the FULL BRIGHT
position.
Indicator Dimming: The scan tool displays the duty cycle
of the pulse width modulated (PWM) signal distributed by the BCM to the PWM
controlled IP backlighting based on the postion of the IP dimmer switch
(Thumbwheel). The scan tool displays 1.2 percent when the headlamp
switch is in the AUTO position and the daytime running lamps (DRL)
are ON or the IP dimmer switch is in the FULL DIM position. The scan tool
displays 100 percent when either the headlamps or park lamps are
activated and the IP dimmer switch is in the FULL BRIGHT position.
Light Sensor: The scan tool displays the output voltage
of the ambient light sensor based on the intensity of light detected. As
the light intensity increases, the sensor displayed voltage decreases.
In the LIGHT state, a low voltage (not less than 1.75 volts) is
present and the DRL will be ON. In the DARK state, a high voltage (up
to 4.9 volts) is present and the headlamps will be ON.
Low Beam Duty Cycle: The scan tool displays the duty cycle
percentage of the pulse width modulated (PWM) ground signal controlling the
headlamp driver module (HDM). The BCM uses this feature to signal the HDM
to operate the low beam headlamps in low beam headlamp mode at full intensity
(100 percent) or in DRL mode at a reduced intensity (81 percent).
Memory Switch Backlight: The scan tool displays the duty
cycle of the pulse width modulated (PWM) signal distributed by the BCM to the
PWM controlled memory switch backlight based on the postion of the IP dimmer
switch (Thumbwheel). The scan tool displays 0 percent when the
headlamp switch is in the AUTO position and the daytime running lamps
(DRL) are ON or the IP dimmer switch is in the FULL DIM position. The
scan tool displays 35 percent when either the headlamps or park lamps
are activated and the IP dimmer switch is in the FULL BRIGHT position.
Mirror Switch Backlight: The scan tool displays the duty
cycle of the pulse width modulated (PWM) signal distributed by the BCM to the
PWM controlled mirror switch backlight based on the postion of the IP dimmer
switch (Thumbwheel). The scan tool displays 2 percent when the
headlamp switch is in the AUTO position and the daytime running lamps
(DRL) are ON or the IP dimmer switch is in the FULL DIM position. The
scan tool displays 25 percent when either the headlamps or park lamps
are activated and the IP dimmer switch is in the FULL BRIGHT position.
Window Switch Backlight: The scan tool displays the duty
cycle of the pulse width modulated (PWM) signal distributed by the BCM to the
PWM controlled window switch backlight based on the postion of the IP dimmer
switch (Thumbwheel). The scan tool displays 0 percent when the
headlamp switch is in the AUTO position and the daytime running lamps
(DRL) are ON or the IP dimmer switch is in the FULL DIM position. The
scan tool displays 100 percent when either the headlamps or park
lamps are activated and the IP dimmer switch is in the FULL BRIGHT position.
Inputs
Courtesy Lamp Switch: The scan tool displays the position
of the courtesy lamp switch. The scan tool displays Active when the switch
is turned ON. The BCM uses this data in controlling the operation of
the courtesy lamps.
Dimming Enabled: The scan tool displays if the dimming
feature of the module is enabled or disabled. The scan tool displays On when
the dimming feature of the module is enabled.
Door Ajar Switch: The scan tool displays Off when the
applicable door is fully closed or On when the door is open or ajar.
Flash to Pass Switch: The scan tool displays the position
of the flash to pass switch. The scan tool displays On when the switch is
pulled to activate the high beams momentarily while the switch is held.
Front Fog Lamp Switch: The scan tool displays the position
of the front fog lamp switch. The scan tool displays On when the front fog
lamp switch is activated with the park lamps or low beam headlamps ON.
Front Wipers Active: The scan tool displays the state of the
wiper motor. The scan tool displays Yes when the wipers are in operaton after approximately
the first 3 cycles of the wiper blades.
Headlamp Switch: The scan tool displays the position of
the headlamp switch. The scan tool displays Active when the headlamp switch
is in the ON position. The BCM uses this data in controlling the operation
of the headlamps.
High Beam Switch: The scan tool displays the position
of the high beam switch. The scan tool displays On when the switch is used
to activate the high beams.
Ignition 0: The scan tool displays the position of the
ignition switch. The scan tool displays On when the ignition switch is in
the RUN or CRANK position.
Ignition 1: The scan tool displays the position of the
ignition switch. The scan tool displays On when the ignition switch is in
the RUN or CRANK position.
Ignition 3: The scan tool displays the position of the
ignition switch. The scan tool displays On when the ignition switch is in
the RUN position only.
Inadvertant Power Relay: The scan tool displays the state
of the inadvertent power battery rundown protection feature of the BCM. The
scan tool displays Off when all inadvertent power circuits are functioning
normally.
Interior Lamp Defeat Switch: The scan tool displays the
position of the courtesy/dome lamp override switch. The scan tool displays
On when the switch is activated requesting the BCM to override the normal
interior lamp activation inputs and deactivate the interior lighting.
Key in Ignition: The scan tool displays Yes when the key
has been inserted into the ignition switch. The scan tool displays No after
the key has been removed.
Left Rear Door Ajar Switch: The scan tool displays Off
when the left rear door is fully closed or On when the left rear door is open
or ajar.
Liftgate Ajar Switch: The scan tool displays Closed when
the liftgate is fully closed or Ajar when the liftgate is open or ajar.
Liftglass Ajar Switch: The scan tool displays Closed when
the liftglass is fully closed or Ajar when the liftglass is open or ajar.
Park Brake Switch: The scan tool displays the position
of the park brake pedal. The scan tool displays Set when the park brake is
engaged closing the switch. The BCM uses this data in controlling the
operation of the park brake indicator, the reminder chime feature and the
DRL system.
Park Lamp Switch: The scan tool displays the position
of the parklamp switch. The scan tool displays Active when the park lamp switch
is in the ON position. The BCM uses this data in controlling the operation
of the park lamps.
Right Rear Door Ajar Switch: The scan tool displays Off
when the right rear door is fully closed or On when the right rear door is
open or ajar.
Output Control
Backup Lamps: The scan tool displays the commanded state
of the BCM which directly supplies battery positive voltage to the backup
lamps. The scan tool displays On when the BCM activates the backup lamps
upon receiving a backup lamp request signal from the backup lamp switch.
Dimming Level: The scan tool displays the duty cycle of
the pulse width modulated (PWM) signal distributed by the BCM to the interior
lighting circuits. The scan tool displays 0 percent when the
interior lamps illumination is OFF. The scan tool displays 100 percent
when the interior lamp illumination is at full intensity.
High Beams: The scan tool displays the commanded state
of the high beam relay. The scan tool displays On when the BCM allows the
high beam relay to go to ground activating the high beam headlamps.
Inadvertant Power Relay: The scan tool displays the state
of the inadvertent power battery rundown protection feature of the BCM. The
scan tool displays Off when all inadvertent power circuits are functioning
normally.
Low Beam Duty Cycle: The scan tool displays the commanded
state of the headlamp driver module. The BCM displays 100 percent for the
low beam headlamps in low beam headlamp mode at full intensity or 81
percent in the DRL mode resulting with a reduced intensity.
Park Lamp Relay: The scan tool displays the commanded
state of the park lamp relay. The scan tool displays On when the BCM allows
the park lamp relay to go to ground to activate the park lamps.