With GST

1. Install all removed parts.
2. Check mass air flow sensor signal in MODE 1 with GST.

   3.8 - 5.2 g.m/sec: at idling 

   16.0 - 21.5 g.m/sec: at 2,500 RPM 

OK or NG 

1. OK: GO TO 8.
2. NG: Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or grounds. Refer to DTC P0101: MAF SENSOR .