Service Check Signal Circuit Method

With the ignition switch OFF, connect the HDS to the 16P data link connector (DLC) (A).
NOTE: The 16P data link connector (DLC) is located under the dash on the passenger's side for '2000 model, and on the driver's side for '2001-2006 models.

Fig 1: Locating 16P Data Link Connector (DLC)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Short the SCS circuit to body ground using the HDS.
Turn the ignition switch ON (II).
The blinking frequency indicates the DTC. DTCs are indicated by a series of long and short blinks. Add the long and short blinks together to determine the DTC. After determining the DTC, refer to the DTC TROUBLESHOOTING .
The system will not indicate the DTC unless these conditions are met:
- Set the front wheels in the straight ahead driving position.
- The ignition switch is turned ON (II).
- The engine is stopped.
- The SCS circuit is shorted to body ground before the ignition switch is turned ON (II).
  Example of DTC 23
Fig 2: Identifying DTC Blinking Display
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Disconnect the HDS from the DLC.