SH-AWD Control Unit Update

SH-AWD Control Unit Update

Special Tools Required

Honda diagnostic system (HDS)

Honda interface module (HIM)

HDS pocket tester

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), or press the engine start/stop button to select the OFF mode during the update. If there is a problem with the update, leave the ignition switch in ON (II), or the vehicle in the ON mode, otherwise the control unit could be damaged, or it will set DTCs.

- 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 the same program it already has installed. 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 the ON (II) position, or the engine start/stop button in the ON mode, 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), or the vehicle in the OFF mode, connect the HDS/HIM to the DLC (A) located under the driver's side of the dashboard.

2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

3. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it does not, 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. SH-AWD Yaw Rate-Lateral/Longitudinal Acceleration Neutral Position Memorization