Speedometer signal voltages

1998 FORD E-SERIES VAN
53,000 MILES • 7.3L • V8 • 2WD • AUTOMATIC
Avatar
KEVIN1954
  • MEMBER
  • 15 POSTS
Speedometer inoperable, good speed sensors and wiring. Wondering what color are the signal wires to the the speedometer head and what the voltage readings should be?
Mar 7, 2018 at 4:29 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good morning.

Do you have a scan tool to monitor the input to the PCM from the sped sensor? you need that to see if it is generating a signal to the PCM. if it does, then it is transferred to the cluster to display a mileage and speed. you cannot see a voltage as it is a pulsed reading that goes to the cluster.

Roy
Mar 7, 2018 at 7:16 AM
Advertisement
Avatar
KEVIN1954
  • MEMBER
  • 15 POSTS
Thanks Roy.
Mar 7, 2018 at 8:40 AM
Avatar
ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
You are welcome.

Roy
Mar 7, 2018 at 9:15 AM