GR8-1200 OEM
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
34
Power Supply Mode tests and maintains battery
voltage in the vehicle at 13.5 volts to allow for un-
interrupted reprogramming of vehicle computers,
retain vehicle system settings, or simply to main-
tain battery voltage.
I
MP
ORTANT
Only the large clamps from the GR8 charge engine
should be connected to the battery terminals when
performing diagnostic charging.
Before starting Power Supply Mode, verify that all
vehicle loads are off and the key is not in the ignition.
NOTE
:
Start the Power Supply Mode to begin the
control module reprogramming process.
1.
If connected, remove the small tester clamps from the bat-
tery terminals and connect the large charger clamps.
2. In the Main Menu use the LEFT or RIGHT ARROW key to
highlight the POWER SUPPLY icon. Press the NEXT
soft
key.
3. Use the UP or DOWN ARROW key to select the BATTERY
TYPE, or press the corresponding numerical key to move
the dot to the option button of your choice.
1
REGULAR FLOODED
2
AGM
3
AGM SPIRAL
4. Press the NEXT
soft key.
Before entering the Power Supply Mode, the GR8 will test
the battery to determine if it needs to be charged. The
following message will be displayed if the battery does
not have a suffi
cient charge.
NOTE
:
If you choose to charge the battery, you
will need to restart the Power Supply Mode once
the battery has been successfully charged.
NOTE
:
The GR8 tests the battery to determine if it is
safe to charge. If it detects that the battery is defec-
tive, it beeps, fl ashes the status light, and displays a
warning that the battery is unsafe to charge. Press
the EXIT soft key to return to the Main Menu.
5.
If the battery is safe to charge, the GR8 begins maintaining
the battery voltage at 13.5 volts.
NOTE
:
Amperage fl uctuates in response to the
vehicle’s demands. If the voltage drops below
the 12.8, the GR8 displays a warning and raises
the voltage to the set point.
6. When
fi nished servicing the vehicle, press the STOP but-
ton or the OFF switch, unplug the power cord and discon-
nect the clamps.
Chapter 8: ECM Power Supply
Chapter 8: ECM Power Supply
