Real Time AWD Control Unit Update

Real Time AWD Control Unit Update













Any one of the above updating tools can be used.

Procedure

NOTE:
* Use this procedure when you need to update the real time AWD control unit at any time.
* Make sure the HDS/iN workstation has the latest software version.
* Before you update the real time AWD control unit, make sure the battery in the vehicle is fully charged, and connect a jumper to the 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 real time AWD 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 real time AWD control unit update whenever the real time AWD control unit is substituted or replaced.
* You cannot update a real time AWD 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 flashing 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 real time AWD control unit is updated.

1. HDS DLC - Connection





1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.

2. Real Time AWD Control Unit Update

1. Select the update mode, and follow the screen prompts to update the real time AWD control unit.

2. If the software in the real time AWD control unit is the latest, disconnect the HDS/HIM/GNA600/MVCI from the DLC. If the software in the real time AWD control unit is not the latest, follow the instructions on the screen.