Hi honda94,
When the D4 lamp flashes, an error has been detected in the transmission control system and you need to retrieve the Diagnostic Trouble Code to find out what is wrong.
From the diagram, bridge the connector and turn the ignition switch to ON and count the flashing of the D4 light for the DTC. Delayed flashes = 10 and quick flashes = 1.
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Monday, December 29th, 2008 AT 9:07 AM