How do I clear my codes on my 1996 Eldo ETC? Thanks guys

How do I clear my codes on my 1996 Eldo ETC? Thanks guys
Enter into the onboard diagnostics by simultaneously pressing and holding the OFF and WARMER buttons with the key on. After the diagnostics activates, release the OFF and WARMER buttons and read off the codes that display. After the codes display the system will prompt you with something like PCM? At this point in the diagnostics the LO button is the no key and the HI button is the yes key. Just answer the prompts to find the "clear codes?" prompt and answer yes.