When the D4 light starts blnking while driving, an error in the transmission control system has been detected and it would cause erratic shifting.
Retrieve the trouble code and let me know what it is.
To retrieve the trouble code, use a jumper wire to connecthe SCS and turn ignition switch ON. Count the blinking of the D4 light to get the trouble code.
Prolonged flashes = 10 while quick flashes = 1. A longer pause in between menas the next code would be read. The process would repeat once all codes has been flashed.
Friday, January 29th, 2010 AT 1:27 PM