System Inspection

System Inspection

Visual Inspection
1. Check the air hose between MAFS and throttle body is torn or installation.
2. Check deforamtion, crack or installation of throttle valve (body)
3. Has a problem been found ?





Check MAFS
1. IG "OFF" and install a scantool
2. ENG "ON" and monitor "MAFS" data on the service data.
3. Monitor signal waveform at signal terminal of MAFS with scantool.

Specification : Signal waveform will be displayed as follows. Frequency will be increased during acceleration. (Be aware that the signal of MAFS is not voltage display but frequency display).









Fig.1) Normal waveform of MAFS at idle. (640 rpm & 13.0 kg/h)
Fig.2) Normal waveform of MAFS at acceleration. (2520 rpm & 43.7 kg/h)
4. Are both service data and signal wave form dispayed correctly ?