How to Use the Self-Diagnostic Function Without the HDS: Notes

The climate control unit has a self-diagnostic function. To run the self-diagnostic function, do the following:

1. Turn the ignition switch to LOCK (0), and then to ON (II).
2. Press and hold the ON/OFF button, then within 10 seconds press and release the REAR WINDOW DEFOGGER/MIRROR HEATER button five times. Release the ON/OFF button, then the self-diagnostic begins.
   NOTE:

   • The blower motor will run at various speeds regardless of what the panel is displaying.
   • If there is a problem with the system, it will flash 88, or 88 AUTO or 88 A/C, and one or more of the 14 indicator segments (A through P). Refer to CHECKING FOR DTCS .
   • If there is more than one DTC, they are displayed one at a time in sequence followed by a pause (all the display indicator segments illuminate) between the DTCs.
   • If there are no problems detected, the segments will not illuminate, and the system will appear to be turned off.
     Fig 1: Identifying Auto Indicator, A/C Indicator, Auto Button, On/Off Button, Recirculation Button And Temperature Indicator

     Courtesy of AMERICAN HONDA MOTOR CO., INC.