FOR THE BENEFIT OF FUTURE WEBPAGE VIEWERS:
Follow the flowchart/guider I found
Wholly ignore tech8's "You're not supposed to have 5V" thing. I spent a month chasing a phantom short thanks to that.

Bought a used 96 Accord and discovered that the VSS and its plug melted together, so I ordered replacements for both

My brother helped me install the new VSS, and in his "I know more about cars than you" brilliance, plugged the melted VSS plug onto the new VSS to see if it still worked (It didn't, to the shock of nobody)

When I went to replace the plug, I took a picture of the plug with my phone (Or so I thought), snipped the wires, and after prepping the new plug, discovered that my phone didn't actually save the picture.

I matched black to black and followed this diagram to connect the new plug, but my speedometer (Neither the stock one or the replacement one I purchased before realizing that it was the VSS.) still does not function.

So that leaves me with two questions:

1. Is it possible my brother insta-fried the new VSS when he put the melted plug on the new VSS?
2. Was that wiring diagram correct? Should I be getting battery-level voltage on the left plug pin (11.5ish volts) and 5 volts on the middle pin?

Thanks in advance for any help.

 

Bump

 

See this thread for testing: https://honda-tech.com/forums/honda-...peedo-3320989/

 

Thank you, that helps confirm my wiring.

In your reply, you say if there's voltage on pin 3, there's a short.
I measured 4.69v on that pin, so in your experience, what would be the likeliest place to find a short on that wire?

 

Bump

 

There is a short if there is voltage on pin 3 with the VSS disconnected. When you measured the voltage on pin 3, was the VSS disconnected?

 

Yes, the plug itself was disconnected from the VSS, the VSS itself is still attached to the transmission (Or whatever its mounted to.)

 

Your first post mentioned the plug melted. Re-check the VSS harness wiring and insulation.

The orange wire runs from the VSS to an 14P gray connector (Connector C133 for a 4 cylinder) in the engine bay, then through a 20P white junction connector way up behind the driver's side dash, then separately to the ECM/PCM, cruise control unit, and the gauge assembly. If there was a short in the orange wire, the short can be anywhere along there. I've only attached a picture of Connector C133.

If you don't find any issues with the orange wire at the VSS harness and connector, you might want to start disconnecting harness connectors where the orange wire runs, to try to narrow down where the short may be.

 

After being sick and cautiously trying to get C133 apart (Had to unclip it from the injector resistor to get it to actually come apart.), I've made a unfortunate discovery.

The orange wire has 3.95/94 volts at C133, when, according to your reply on your linked thread (Thanks again for that.), it shouldn't have any voltage at all.
Neither of the ECU-related fuses nor the 10A fuse relating to the speedo itself have blown, nor has the VSS plus re-melted.


I'll update with whatever I find in the dash./Any points in the right direction are appreciated.

 

I just downloaded a service manual (http://wedophones.com/Manuals/Honda/...e%20Manual.pdf pg 1158) for a 94 Accord (AFAIK everything is the same one the 5th Gen models.) and it says that I'm SUPPOSED to have nearly 5 volts on the middle pin:

 

Re-read my previous post and my previous link.

1. There should be no voltage on terminal no. 3 (orange wire) with the VSS disconnected. Ignition switch in the ON (II) position or not.

2. With the VSS connected. With the ignition switch in the ON position (car not started or running), back probe the VSS orange wire terminal. Spin the passenger side wheel slowly. The voltage measurement on the VSS orange wire suppose to pulse from 0V to approx. 5V.

 

This flowchart (Img 1) from the aforementioned official 94 Accord manual says Orange to Ground is supposed to have that voltage, as well as that I actually need to lift the car and spin a wheel to get any voltage fluctuation

Additionally, the 94-97 (Allegedly)/5th gen manual shows a different wiring (Img 2) of the plug from the one I linked in my OP (Img 3) .





Is there any difference between the 94-97 manual I linked above and the material on the 96 you're posting?