SH-AWD Control Unit Update

Updating the SH-AWD Control Unit

Special Tools Required
- Honda diagnostic system (HDS)
- Honda interface module (HIM)
- HDS pocket tester

NOTE:
- Use this procedure when you need to update the SH-AWD control unit in a troubleshooting procedure.
- Make sure the HDS/HIM has the latest software version.
- Before you update the SH-AWD control unit, make sure the battery in the vehicle is fully charged.
- Never turn the ignition switch OFF during the update. If there is a problem with the update, leave the ignition switch ON.
- To prevent SH-AWD control unit damage, do not operate anything electrical (headlights, audio system, brakes, NC, power windows, moonroof (if equipped), door locks, etc.) during the update.
- To ensure the latest program is installed, do an SH-AWD control unit update whenever the SH-AWD control unit is substituted or replaced.
- You cannot update an SH-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) lamp came on or was flashed during the update, leave the ignition switch in the ON (II) position when you disconnect the HIM from the data link connector (DLC). This will prevent SH-AWD control unit damage.

1. Select the update program, and follow the screen prompts to update the SH-AWD control unit.
2. If the software in the SH-AWD control unit is the latest, disconnect the HDS/HIM from the DLC, and go back to the procedure that you were doing. If the software in the SH-AWD control unit is not the latest, follow the instructions on the screen.
3. Do the SH-AWD control unit initialization.
4. Do the SH-AWD differential clutch torque memorization.
5. Do the yaw rate-lateral acceleration neutral position memorization.