•Checks for systems of GM TBI, Bosch PFI, Ford TBI, GM PFI, Geo TBI and GM SCPI just disconnect the fuel injector, plug the Noid Lite into injector, Plug the Noid Lite into injector wiring harness then crank the engine.
•IAC Signal Test Lights.
 

•Checks for systems of GM TBI, Bosch PFI, Ford TBI, GM PFI, Geo TBI and GM SCPI just disconnect the fuel injector, plug the Noid Lite into injector, Plug the Noid Lite into injector wiring harness then crank the engine.
•IAC Signal Test Lights.