Alright so a few days ago my D4 Light was flashing which I looked it up and it is due to transmission failure somewhere I get that but when I look up Code 9 I get different things from different people but mostly its my NC Speed Sensor. Anyways the issue is My Car is running fine no problems, I do not notice a change in gears that is not normal like being stuck in a gear or anything only No check engine light on just the D4 flashing and well my ABS has been out for a while too. Anyways To **** it is a little harder now but I can still shift fine what is the problem for a code 9? Also if I wanted to do this myself is it easy or hard and can you give me any pointers! Also I did notice the other day that some wires under by the transmission were split like a animal chewed at them or something could that give me the D4 light?
SOUNDS LIKE YOU HAVE A VERMIN PROBLEM SUCH AS SQUIRRELS OR RODENTS BUT YOU SHOULD CHECK TO MAKE SURE THAT YOU DO NOT HAVE WIRES THAT ARE SHORTING OUT BUT THE MOST REASONABLE PROBELM WITH THE 90-93 MODELS IS A MAIN RELAY WHICH IS THE PGMI RELAY AHVING BAD CONTACTS AND THIS WILL CAUSE D4 TO FLASH THIS PROBLEM HAS BEEN A SORE THUMB SITUATION ON HONDA FOR A WHILE BUT IT WILL LEAD TO CAR NOT STARTING SOON AND ALSO CAUSE STALLING OR NO RESTART AFTER VEHICLE GETS TO OPERATING TEMPERATURE. IF YOU NEED TO CHECK THE RESISTANCE ON THE SOLENOIDS THAT CONTROL D4 THEY ARE RATHER EASY TO GET TO SINCE THEY SIT ON THE TOP PART OF THE TRANSMISSION ON THE PASSENGERS SIDE. YOU SHOULD BE ABLE TO GET TO THE CONNECTOR AND THE SOLENOIDS ARE HELD DOWN BY THREE 10MM BOLTS.
The post from lonniewinste is completely wrong and way off base. The D4 light for 92 accord is a TCU error (transmission control unit). Error 9 is the rear counter shaft speed sensor (NC sensor). I believe the sensor is located on the back of the transmission, and if you remove the connector and measure the resistance of the sensor, it should be between 400-600 ohms. If not, replace it. At the time of this post, Autozone sells one for about $125 bucks (part number SU6712). If the sensor is good, then you have some bad wiring going to the TCU.
The sensor should be a pretty easy fix as long as you can get to it. You might need to jack the car up and access it from underneath.
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d4 light indicates electronic transmission failure but this can b as simple as low transmission or old fluid . change fluid if its dark or watery, before you panic.(( use only honda brand atf,)) if that doesnt work the codes need to b considered this can b done by jumping the two pin connector under or behind the glovebox with a paper clip the d4 light will flash once you turn the ignition on to first position' when dash lights first come on . it will flash then stop then flash again you need to count the first and second separately this will give you 2 diget code look it up exp; honda d4 dtc 34 just say google it , but if i were to guess if not the trans fluid the codes will b for sift selinoids easy fix but no fun to change. good luck. you will need a scanner for the check engine light uncommon for both to show up at the same time two diffrent systems ,disconnect the battery for 30second this will reset the ecm, it maybe a false code and it may not return.
D4 flashing? this may be the neutral safty switch, theres a selector switch that connects to the shifter, this switch lets you know what gear your in and also the compuetr. this sounds like it thinks its in d4 and will not allow the car to start. this is like the car is in drive and you are trying to start it. good day.
The flashing S light is the transmission control unit telling you there is an issue somewhere. Click here to diagnose the problem. That post is for 92-93 accords where the D4 light is for TCU errors, but diagnosing is the same. Just replace every instance of "D4 light" with "S light".
If you mean the S light is flashing, then your transmission control unit is telling you there is a problem somewhere. Click here to learn how to diagnose the problem. That link is for 92-93 accords where the D4 light indicates TCU errors, so just replace every instance of "D4 light" with "S light".
This is an internal transmission failure the check engine light along with the D4 light flashing and the slipping is telling you this. What happens is the clutches internal in the transmission fail and no longer hold pressure and cause the transmission to fail triggering the check engine and D4 light.
This is your transmission control unit telling you there is a problem. I have another post here (http://www.fixya.com/cars/t5554380-92_honda_accord_d4_light_flashing) with details on how to diagnose. This link says "flashing D4 light" but the issues it the same. 90-91 accords have flashing S lights for TCU errors, and 92-93 have flashing D4 lights.
Flashing D4 light is an error from the TCU (transmission control unit), so you got something going on with your transmission. If you want to pull the error code, remove the passengers side kick panel and look for a pair of wires with a blue connector at the end. Stick a paper clip or some other piece of wire into each hole of the connector to short the wires. Put your key in the ignition and turn 2 clicks. The D4 light will flash the code...short flashes=1 and long flashes=10. Add the number of short and long flashes to get your code. Errors are below:
0-Transmission control unit (TCU) faulty. 1-Lock-up solenoid 'A' circuit open or shorted. 2-Lock-up solenoid 'B' circuit open or shorted. 3-Throttle Position Sensor circuit open or shorted. 4-Vehicle Speed Sensor open or shorted - No signal from speedometer. 5-Shift Lever Position Switch circuit shorted. 6-Shift Lever Position Switch circuit open. 7-Shift Solenoid 'A' circuit open or shorted. 8-Shift Solenoid 'B' circuit open or shorted. 9-Counter shaft or transmission speed pulse generator open or shorted. 10-Coolant Temperature Sensor open or shorted. 11-Engine RPM (Ignition coil signal) open or shorted. 12-(No code 12 used) 13-Main shaft speed pulse generator open or shorted. 14-Linear (line pressure control) solenoid open or shorted. 15-Kick down switch circuit shorted.
Change your main relay assembly under the dash on drivers side. I was able to get my small hands under there and change mine out readily--not easy to get to as I didn't want to take the dash apart, but I got it done. If you have other problems after then find you a used TCU unit and change it out (passenger side where they put their feet, pull the carpet up, you will see easy, easily replaceable).