Service Check Signal Circuit Method

WARNING: This page is about a different variant/trim than selected.

With the ignition switch OFF, connect the HDS to the 16P data link connector (DLC) (A) located under the dash on the driver's side of the vehicle.

Fig 1: Connecting The HDS To The 16P Data Link Connector (DLC) Located Under The Dash On The Driver's Side Of The Vehicle
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch ON (II).
Short the SCS circuit to body ground using the HDS.
Record the DTC.
The blinking frequency indicates the DTC. DTCs are indicated by a series of long and short blinks. One long blink equals ten short blinks. Add the long and short blinks together to determine the DTC. After determining the DTC, refer to DTC TROUBLESHOOTING INDEX .
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 after the ignition switch is turned ON (II).
Fig 2: Example of DTC 23
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Disconnect the HDS from the DLC.