Honda Civic Hybrid 2009 Owner's Manual page 338

Jump Starting
4. Connect the second jumper cable
to the negative ( ) terminal on
the booster battery. Connect the
other end to the grounding strap
as shown. Do not connect this
jumper cable to any other part of
the engine.
5. If the booster battery is in another
vehicle, have an assistant start
that vehicle and run it at a fast idle.
332
Start the vehicle. If the starter
6.
motor still operates slowly, check
that the jumper cables have good
metal-to-metal contact.
7. Once your vehicle is running,
disconnect the negative cable from
your vehicle, then from the
booster battery. Disconnect the
positive cable from your vehicle,
then from the booster battery.
Keep the ends of the jumper cables
away from each other and any metal
on the vehicle until everything is
disconnected. Otherwise, you may
cause an electrical short.
If your vehicle's 12 volt battery is
disconnected or goes dead, the IMA
battery level gauge reading will not
be correct the next time you turn the
ignition switch to the ON (II)
position. It will show less than the
actual level temporarily. It will show
the correct level after you drive for
at least 30 minutes.