Post by Alex_M on Apr 15th, 2024 at 9:15am
Vehicle Speed Issue
1999 Ford F250 Super Duty 6.8L, 4x2, RWAL
P0500-verified concern with scanner, vehicle speed signal dropped out periodically. GEM, ABS and speedometer never lost speed signal. After checking connection at PCM PIN 58, I back probed PIN 58.
I expected to see a digital signal but the scope image was not what I expected to see.
I this post work I will continue description [img][/img].
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?action=downloadfile;file=Ford_F-250_1999_VSS_from_DSS_and_ABS_speed_output.psdata (1809 KB | )
Screenshot__3__004.png (374 KB | )
1999 Ford F250 Super Duty 6.8L, 4x2, RWAL
P0500-verified concern with scanner, vehicle speed signal dropped out periodically. GEM, ABS and speedometer never lost speed signal. After checking connection at PCM PIN 58, I back probed PIN 58.
I expected to see a digital signal but the scope image was not what I expected to see.
I this post work I will continue description [img][/img].
https://www.autonerdz.com/cgi/yabb2/YaBB.pl?action=downloadfile;file=Ford_F-250_1999_VSS_from_DSS_and_ABS_speed_output.psdata (1809 KB | ) Screenshot__3__004.png (374 KB | )