Unit Check (Quick Check): Aircon

This diagnosis tests the climate signal via B-CAN bus between the audio-navigation unit and the climate control unit. Make sure the engine is running for this test.

When the Connection shows NG, check for B-CAN DTCs with the HDS.

Fig 1: Aircon Connection Screen

Courtesy of AMERICAN HONDA MOTOR CO., INC.

HFL 

This diagnosis checks first whether the HandsFreeLink control unit is connecting to the audio-navigation unit via the GA-Net. If the HFL and GA-NET shows NG, go to HandsFreeLink control unit Input Test (see CONTROL UNIT INPUT TEST ). Then checking the HandsFreeLink control unit status. If the HFL shows HFL DTC (B1792), go to indicated HFL DTC TROUBLESHOOTING .

Fig 2: HFL Connection Screen

Courtesy of AMERICAN HONDA MOTOR CO., INC.