EL-50332 EV/HEV Battery Service Tool
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
16
Chapter 4: Depower
Use this function to depower a battery pack or sec-
tion of a battery pack down to a user-dened pre-de-
termined voltage.
NOTE: Depending on the condition of the battery
pack or section, this process may take 5 to 6
hours to
perform.
Hazardous voltage.
An improper connection can result in
serious injury or death.
To avoid electrical shock or burn, never alter
the EV/HEV Battery Service Tool’s original AC
cord and plug. Disconnect plug from outlet
when EV/HEV Battery Service Tool is idle.
Depowering A Battery Pack
IMPORTANT: Make sure to properly prepare the bat-
tery pack by following all required GM guidelines Refer
to your GM documentation for complete information.
Before de-powering a battery pack or section, make sure all
of the external components connected to the EL-50332 are in
good working order.
1. At the Main Menu, use or to select the DEPOWER icon
and press SELECT to continue.
2. Use or to select the vehicle MANUFACTURER and
press NEXT to continue, or press the corresponding num-
ber keys.
1 ALPHEON
2 BUICK
3 CHEVROLET
4 OPEL
5 VAUXHALL
3. Use or to select the vehicle MODEL and press NEXT
to continue, or press the corresponding number keys.
4. Use or to select the depower TARGET and press NEXT
to continue, or press the corresponding number keys.
1 PACK
2 SECTION
NOTE:
For eAssist battery pack, only the PACK op-
tion is displayed.
When PACK is selected: Use or to select the type of HV
CONNECTION
and press NEXT to continue, or press the
corresponding number keys.
1 POWER INVERTER MODULE
2 14V POWER MODULE
3 DIRECT
Hazardous voltage.
An improper connection can result in
serious injury or death.
HV Connection 1 or 2 will close high voltage
contactors and bypass vehicle safety systems.
Refer to GM documentation for inspection re-
quirements and safety precautions.
IMPORTANT: Only select the DIRECT battery
pack option when connecting directly to the bus
bars, bypassing the safety contactors. This func-
tion should only be used when both contactors
cannot be closed.
When SECTION is selected: Use or to select the
TARGET section you would like to depower and press
NEXT to continue.
5. If PACK was selected in step 4, use or to select the
COMM CONNECTION and press NEXT to continue, or press
the corresponding number keys.
1 HYBRID POWER TRAIN CONTROL MODULE 2
2 HYBRID BATTERY CONTACTOR ASSEMBLY
For eAssist only one option is displayed:
1 K59 X2 X3
Chapter 4: Depower
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