learning about the 1994 XJS Coupe 4.0L I just bought, need to cancel a code but I'll be darned if I can find were to plug in the computer, it's so different from my 97 XJ6L. Help is much appreciated

 

No plug for a code reader on a 4.0 litre AJ6 motor, however, you have a built in VCM like the XJ40 (same motor)..

Cancel code by disconnecting battery neg terminal for 10 secs or so - don't forget to make a note of the radio code first tho!!

Larry