1993 240 AT

A friend asked me to have a look at their 240 yesterday. They could not get it out of Park.

I found this to be true, but was able to get it out of Park and into the other gears by pressing the override button on the AT shifter mechanism. (he was probably not pressing it hard enough)

The brake lights work, the blue snowflake lights up and the AC works. The fuses look good. I suspect the issue may be with the shift lock solenoid, but I did not have the tools or knowledge to take this any further, so we parked the car back in the garage.

I've read a bunch of posts, and I am NOT interested in removing/disabling any of the safety features. I want to get it back to proper working condition.

I did not find any detailed posts or videos on diagnosing and fixing the solenoid issue. Do any exist? I've never messed with it, and don't want to screw it up. I could not find anything in OTP Greenbooks about replacing the solenoid. I'm sure I'm not looking in the right place. Does anyone know which manual has the steps for testing and replacement?

Any thoughts/ideas for getting this back in working order are much appreciated.

Thanks!