Agree with Gidner: you should see (B+) voltage, so if the alternator is engaged, you would see 14.3 volt output at the Ignition coil (B+) hot lead, and at MAF connector pin (2) B+ lead..
At the MAF connector, you should measure (4.8 - 5.2) volt at MAF connector pin (4) against ground: that's the (+5 volt) reference voltage supplied from the ECM,
Above is from the kiatechinfo website (see my sig.), you can sign up using Internet Explorer web browser (see reqs. main page), where you can access the Service Info for your vehicle / the MAF diagnostic procedure online:
SEDONA(GQ) >2003 > G 3.5 DOHC > Engine Control/Fuel System > (Repair procedures)