Question about 1997 Honda Prelude
First things first. Check the fluid level and condition. (Honda's are always checked engine off, sitting level.) If the fluid is burnt/stinky and dark, you may have internal a/t issues. Next step would be pull the codes. You're gonna have a P0700 code under the engine list. That is the generic trans system failure code. Your scan tool will need to be able to read all powertrain systems, not just engine data. If it has a specific code for, say one of the shift solenoids, or the linear solenoid, you may be able to replace parts/fluid and be ok. If it has a P0730, or P0740 code, then you're looking at internal clutch pack failure, and a reman. or good used trans. Good luck.
Posted on Apr 01, 2014
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Posted on Jan 02, 2017
SOURCE: 1994 honda accord
The D4 light blinking indicates there is a diagnostic trouble code stored.When a malfunction occurs,the vehicle computer records the code and stores it,then flashes the D4 light to let you KNOW there is a problem.On pre OBD 2 Honda vehicles,1995 and back,Hondas are manual code read,which means you do NOT hook up a scan tool as there is no scan port.The passenger side front kick panel is removed,and a blue 2 wire connector located.Use a jumper wire to short out the connector,then turn the ignition key on,with engine off,not running.This throws the computer into self diagnostic mode,and the D4 or "s" light will flash a series of flashes.The flashes have to be counted,and written down.For example,2 flashes followed by 4 flashes would be a code 24.The code is then looked up with reference material for a description and diagnostic route.Every diagnostic trouble code,has a diagnostic route,for repairing the problem.Again,this informtion,the diagnostic route,is available in reference material from pay sources like All Data Online.After the repair is made,the battery is disconnected to clear the code.Good luck.
Posted on Aug 23, 2008
it is the Transmission Control Unit. you have to find the reason why the TCU is flashing the D4 fault code. not replace the unit. have your vehicle scanned for another code. your transmission or transaxle is giving you a warning that something is wrong .
Posted on Nov 21, 2008
Blinking D4 can also mean electical problem. In my case it was ignition switch's life comming to the end. If my ignition switch was finaly dead and I replaced it with a new one D4 was not blinking anymore. If you have problems with ignition switch, for example it will not start engine at first time try to replace it before it will break on the road in least expected moment. I have '95 odyssey. The ignition switch is faulty in time, it was subject of honda factory recall.
Posted on May 02, 2009
SOURCE: 92 honda accord lx D4 flashes
you have a transmission fault the D4 light blinks to tell you that there is a transmission problem when the light is blinking the transmission computer put the transmission into limp home mode so it will not shift normally and you should try not to drive it very far when it gets to this stage you need to have the transmission codes check to pin point the problem
Posted on May 29, 2009
Theres a transmission cooling sensor and somtimes the wire comes loose from other repairs being done around it. or its just out. its on the left side sitting on the tranny. THATS WHY your d4 light is blinking
Posted on Jul 15, 2009
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