same car but mine is a coupe.

There's a sw/LED combo that allows you to read the DTC (Diagnostic Trouble Codes) from the DM, Diag Module.

See my page: click on the "WWW HOUSE" below). Then read MENU #: 1, 2 and 6. That should give you some idea of the car's elec systems and how the car stores DTCs.

Let us know what you find.

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Regards . . . . JimF
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'94 S500 Cpe

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