Honda Accord 2008 Manual page 1561

07/11/02 09:37:15 61TA0000_190_0140
VSA System Components
VSA Modulator-Control Unit Update
Special Tools Required
• Honda diagnostic system (HDS) tablet tester
• Honda interface module (HIM) and an iN workstation
with HDS and CM update software
• HDS pocket tester
• GNA-600 and an iN workstation with HDS and CM
update software
Use any one of these update tools.
NOTE:
• Use this procedure when you need to update the
VSA modulator-control unit during troubleshooting
procedures.
• Make sure the HDS/HIM has the latest software
version down loaded from the iN (Interactive
Network).
• Before you update the VSA modulator-control unit,
make sure the battery in the vehicle is fully charged,
and connect a jumper battery (not a battery charger)
to maintain system voltage.
• Never turn the ignition switch to LOCK (0) during the
update. If there is a problem with the update, leave
the ignition switch ON (II).
• To prevent VSA modulator-control unit damage, do
not operate anything electrical (headlights, audio
system, brakes, A/C, power windows, door locks, etc.)
during the update.
• To ensure the latest program is installed, do a VSA
modulator-control unit update whenever the VSA
modulator-control unit is substituted or replaced.
• You cannot update a VSA modulator-control unit with
a program it already has. It will only accept a new
program.
• If you need to diagnose the Honda interface module
(HIM) because the HIM's red ( 3) light came on or
was flashed during the update, leave the ignition
switch in ON (II) when you disconnect the HIM from
the data link connector (DLC). This will prevent VSA
modulator-control unit damage.
• DTCs stored in memory are cleared when the VSA
modulator-control unit is updated.
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1. Turn the ignition switch to ON (II), but do not start
the engine.
2. Connect the HDS to the data link connector (DLC)
(A) located under the driver's side of the dashboard.
A
3. Make sure the HDS communicates with the vehicle
and the VSA modulator-control unit. If it doesn't,
troubleshooting the DLC circuit (see page 11-208).
4. Select the update mode, and follow the screen
prompts to update the VSA modulator-control unit.
5. If the software in the VSA modulator-control unit is
the latest, disconnect the HDS/HIM from the DLC. If
the software in the VSA modulator-control unit is
not the latest, follow the instructions on the screen.
6. Do the VSA sensor neutral position memorization
procedure (see page 19-138).
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