Aerio - Throttle Valve Opening Signal Circuit Check

Turn ignition switch on.
Check voltage between terminal G04-1 of ECM (1) connector connected and ground. See Fig 1 .

Fig 1: Throttle Valve Opening Circuit Check
Courtesy of SUZUKI OF AMERICA CORP.
If voltage varies proportionate to throttle opening, throttle valve opening signal circuit is ok.
If voltage does not vary according to throttle opening, go to AERIO SUPPLY VOLTAGE CHECK .