SH-AWD Control Unit Update

SH-AWD Control Unit Update

Special Tools Required

- Honda diagnostic system (HDS)

- Honda interface module (HIM)

- HDS pocket tester

- MVCI unit with the latest control module (CM) update software installed

NOTE:

- Before you update the SH-AWD control unit, make sure the battery in the vehicle is fully charged.

- 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.

- Never turn the ignition switch to LOCK (0), during the update. If there is a problem with the update, leave the ignition switch to ON (II).

- To prevent SH-AWD control unit damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power windows, moonroof, 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. With the ignition switch in LOCK (0), connect the HDS to the DLC (A) behind the driver's dashboard lower cover.






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

3. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn't, go to the DLC circuit troubleshooting Testing and Inspection.

4. Select the update program, and follow the screen prompts to update the SH-AWD control unit.

5. 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.

6. Do the SH-AWD control unit initialization SH-AWD Control Unit Initialization.

7. Do the SH-AWD differential clutch torque memorization SH-AWD Differential Clutch Torque Memorization.

8. Do the yaw rate-lateral/longitudinal acceleration neutral position memorization Testing and Inspection.