trouble to repair a speedometer

1999 DODGE RAM
90,000 MILES • 5.2L • V8 • 2WD • AUTOMATIC
Avatar
OCTAVIO 867
  • MEMBER
  • 1 POST
In my job I use a 1999 dodge ram V8 5.4 Laramie Automatic Transmission, but the speedometer has never worked, this make me stopped by officers saying that my speed is a little bit high, I am trying to repair the speedometer, I have checked all from the speed sensor to the ECU, and Check the signals with a Leader Oscilloscope, then, I see that the speed sensor signals are entering to the ECU but nothing is sent to the cluster, may somebody help me to know where may I find the signals that goes out from the ECU and are sent to the cluster, may somebody help me
Mar 21, 2016 at 9:51 PM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
vss goes out from anti lock not ecm see pic but this may be a can bus problem and another module is giving the problem. if you have a pro style scanner use that to check the can bus.see pics for connections.
Images (Click to enlarge)
Attached Media
Attached Media
Mar 22, 2016 at 6:24 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle