I CAT500 nokobana ukuthola we Carter ukulawula lukagesi. Imisebenzi zihlanganisa voltage naphakathi ezivamile wesitimela injector test, 320b futha ukuhlolwa, futhi zinamandla naphakathi ezivamile wesitimela futha test. Uhlelo inikeza control ingcindezi, isiginali ukugeleza ukuthola, Carter control electronic amasignali elawula uhlelo, futhi ushayela futha uwoyela injector ukusebenza. Isignali ye-ukushayela kanye nemingcele lingasethwa ngokuvumelana nezimo zabo uqobo, futhi nayo bangagcinwa ezindaweni amaqembu, okuyinto esilungele okugcine ngaso kute amemetele futsi ukulungisa isimo tekusebenta Carter ukulawula lukagesi.