How to Check for DTCs with the SCS Mode (retrieving the flash codes)

When the PCM senses an abnormality in the input or output system, the D indicator (A) in the gauge assembly (B) will usually blink. See Figure.

When the D indicator has been reported on, connect the HDS to the DLC (A) (located under the steering column lower cover). Turn the ignition switch ON (II), select Honda System, and SCS mode, then the D indicator will indicate the DTC. See Figure.

If the D indicator and the MIL come on at the same time, or if a driveability problem is suspected, follow this procedure:

1. Connect the HDS to the DLC. (See the HDS user's manual for specific instructions.)
2. Turn the ignition switch ON (II), select Honda System, and then SCS mode, then observe the D indicator in the gauge assembly. Codes 1 through 9 are indicated by individual short blinks. Code 10 and above are indicated by a series of long and short blinks. One long blink equals 10 short blinks. Add the long and short blinks together to determine the code.
   Fig 1: Displaying DTC 1

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
   Fig 2: Displaying DTC 15

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
3. Record all fuel and emissions DTCs and A/T DTCs.
4. If there is a fuel and emissions DTC, first check the fuel and emissions system as indicated by the DTC (except DTC 70, DTC 70 means there is one or more A/T DTCs, and no problems were detected in the fuel and emissions circuit of the PCM).
5. Clear the DTC and data.
   NOTE: You can also reset the memory by removing the No. 13 fuse in the passenger's under-dash fuse/ relay box for more than 10 seconds. If you do, you need to do the following:
   • Get the customer's radio and navigation (if equipped) anti-theft code, and write down the radio and navigation presets.
   • Enter the radio and navigation (if equipped) anti-theft code, reset the preset stations, and set the clock.
   • Do the idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
6. Drive the vehicle for several minutes under the same conditions as those indicated by the freeze data or at speeds over 30 MPH (50 km/h), and then recheck for DTC. If the A/T DTC returns, go to the DTC Troubleshooting Index . If the DTC does not return, there was an intermittent problem within the circuit. Make sure all pins and terminals in the circuit are tight.