Where's the test lamp on 95 Altima ECM?

Can someone tell me where this test lamp is located on a 95 Altima ECM? The Haynes manual says there is one, but I couldn't find the lamp on the ECM itself which is located under the central console. My car's check engine light came on while I was driving. I didn't feel anything wrong with the performance. But I would like to find out the trouble code on this car.

Thanks,

Autozone does check engine diagnostics for free, and nissan is having a 100 point check-up for free on all nissans they might check it for u for free too doubt it though