can be checked with the LED/SW combo next to the F23 module box on the passenger side of the engine compartment.
Read the details on my web page by clicking the link (www) below. If you need any other help, please let me know.
The Diag Module (Menu #5) contains info on the codes that light the Check Engine light. Take you time and read through the menu items to get a 'feel' for the complex engine systems.
To read all codes in the other modules, you'll need a scanner.
Regards . . . . JimF
'94 S500 Cpe
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