1992 Honda Accord

Hi shujuan33,

When the D4 indicator light starts to blink, an error in the transmision control system has been detected and you need to retrieve the trouble code to understand what is causing it.

Bridge the SCS connector and turn ignition switch ON. Count the blinking of the D4 light and let me know the number of blinks to understand the code

A long blink = 10 and a short blink = 1. A longer pause in between indicates the next coe or a repeat of the first code if only one is present.