ASD Light Help

Well ive searched all day, and learned a little but I am still confused.
On my 1992 300sd The ASD light came on today for the first time, I shut off the car and turned it on again and its still on. Do I need to read the codes on the computer? Is there a common thing that goes on these? I know the wiring harness deteriorate but is that related to this? thanks for the help.
bob

[whunter]

Originally Posted by 300SDL

Well ive searched all day, and learned a little but I am still confused.
On my 1992 300sd The ASD light came on today for the first time, I shut off the car and turned it on again and its still on. Do I need to read the codes on the computer? Is there a common thing that goes on these? I know the wiring harness deteriorate but is that related to this? thanks for the help.
bob

Read the codes first.