TheAverageBear

So i changed my transmission fluid and after it was all said and done my speedometer decided to stop working, so i inspected everything, and nothing, guessed it must have been the speed sensor so i went to honda and bought a new one for 160 buck, and that didn't do anything... so if any one could shed some light on this for me that would be awesome

Former User

Do the odometer and tripmeter also not work?

Is the ECU throwing code 17?

TheAverageBear

yeah both of them do not work, and it is throwing code 17

Former User

What year Civic? As you already have a new VSS, the problem lies in the VSS wiring, or possibly the ECU.

TheAverageBear

its a 92 SiR, yeah thats sort of what i figured, just seems strange that it would happen after i changed my transmission fluid, cause when i filled it i didn.t have anything to make it to the side fill hole, so i used the speed sensor hole, and then this happened

Former User

Did you reinstall the VSS drive link? Did you damage the VSS connector?

TheAverageBear

yeah man i reinstalled it, and i just ran outside right now and took it out to have a look at it, and the drive link is in properly, it spins the gear at the bottom, and the connector looked fine to me, i tried to push the pins in some more to try make a better connection, still nothing tho.. there was some blue **** on the middle pin of both the connector and the sensor, is the only abnormalty i saw

TheAverageBear

oh and when i changed my tranny fluid, i first decided to go with the gm synchromesh, and when that was said and done the speedo was just staying on 0 and then randomly jumping up to 20, then back to 0.. and the odometer and tripmeter were working, but barely.. like counted 1 of every 16 kilometers(roughly).. so i decided to get rid of the synchromesh and just use honda mtf... same problem.. then i tried testing one of my friends speed sensors to see if that was the problem before i bought a new one, but his was a different style and ever since then the jumping to 20 stopped and its been just dead

Former User

The VSS connector or wiring is likely the problem. You need to test the VSS circuit with a multimeter to sort things out.

TheAverageBear

alright man, thanks, i'll try that and let you know how it goes

TheAverageBear

I did the multimeter test and the yellow blue wire is fine, but the yellow white wire had nothing. So looked it up in my haynes manuel but in there it says that they are both yellow blue? anyways i just went with the one farthest from the ground since that is what the yellow white wire is, and it says that it goes to the ecm pin b10, then to the cluster and roof unlatched ind unit?

kp

Make sure your plugs are clear of corrosion. You mentioned there was some blue stuff on one of the terminals, clean them up. Could just be a bad connection. This would explain the speedo jumping from 0-20 every so often. Start simple.

Former User

The VSS connector has three wires:

YEL/BLU = input battery power (12V) through fuse 24 (if you have SRS)
BLK = ground wire
YEL/WHT = output speed signal to both the ECU and the speedometer/tripmeter/odometer in gauge assembly

With the VSS connector unplugged and the key turned to ON(II), you should measure (1) 12V to body ground at the YEL/BLU terminal in the connector and (2) continuity to body ground on the BLK ground wire terminal.

(3) Now unplug connector B at the ECU and gauge assembly, where the YEL/WHT wire at the VSS changes to a YEL/BLU wire. You should measure continuity from the VSS YEL/WHT terminal to the YEL/BLU terminal at either the ECU connector or the gauge assembly connector.

95jeremie

bad connection
100% on this one
i bought a new VSS and cluster thinking that was the problem
ended up cutting off the old connector and installing a new one
that was 3+ years ago and no problems to this day

i run the gm synchromesh
that **** is kick ***
no problems

TheAverageBear

I did all 3 of the steps you mentioned above, the ground is good, the blue yellow is good. and it is good from the yellow white to both the cluster and the ecu.. so i have no clue what it could be?



And i tested from the pins on the VSS connector so i don't think its a bad connection

Former User

Check for a short in the wire running between the ECU and the VSS or gauge assembly. If none is found, try swapping in a new ECU.

TheAverageBear

alright i'll give that a try, i was thinking of just getting new wire and pining it in to everything to be 100% sure? how does it run to both the ecu and cluster? is it just a "y" in the middle somewhere?... and its a spoon p30 ecu.. i dunno if that helps at all

Former User

You bring up a good point. Make sure the VSS is properly pinned to the P30 ECU. Sorry, I don't have the P30 ECU pinout to help you.

If the VSS wires are pinned to the ECU correctly, then check for a short in the wires rather than rewiring. You can trust your multimeter. If there's no short, then try swapping the ECU with a known good one. Do you have a friend who would let you swap ECUs?

TheAverageBear

okay i will check everything in the morning, I think i am going to get a new connector just to be sure its making proper contact with the vss. I asked at honda today but they can't get them, Do you know anywhere that sells them new?.. and i do have a friend with an ecu, but he lives like 4 hours away so i will i have to wait till the next time i make a trip there, which should be sometime in the next couple weeks

Jimmy

iTrader: (5)

Just out of curiosity double check the plug and see if one of the prongs are broken off into the connector.

TypeRMOBBiN209

wow i justed changed my tranny fluid and im going threw the same problem you are

kp

Pleeeaaassseee check the connections for corrosion. It so easy. The female side of the plug only contacts a very small area of the male prongs, it doesn't take very much corrosion to disrupt the connection. Just inspect it very closely for a few minutes.

TheAverageBear

i have like a hundred times man.. everything looks to be in perfect working order

TheAverageBear

I did today man and i noticed that one prong in the female side was bent back and it didn't look like it could make contact, so i bought some electrical contact cleaner and tried gently bending it back into place, after i put it all back together it still didn't work, but i wanna just replace the whole connecter just to be sure.. where did you buy yours new from? i tried honda but they said they can't get them

hector85

iTrader: (1)

my speedo currently doesn't work either, and i am also getting code 17. I want to thank ron for supplying the schematics and checking procedures. Im at work, but i will get to this in the afternoon.

AvarageBear,
As for the connector, my guess to how you can find one can be through a junk yard.
Your plan is to cut off the old one and splice and solder the new one on to the current wiring, correct?