2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 115Get this manual
1A-51 Engine General Information and Diagnosis: Step Action 8) Measure the output voltage between the Dg wire and groundSpecial tool (A): 0990025008 (Multi-circuit tester set) (B): 0990025009 (Needle pointed probe set) Tester knob indication Voltage) IAT sensor output voltage 0.2 4.9 ((+) terminal: Dg () terminal: Ground) Yes Go to Step 2No Dg wire shorted to ground If wire is OK, go to Step 2 (A)
I933H1110050-01
Are the continuity and voltage OK? 1) Turn the ignition switch OFF2) Disconnect the IAT sensor coupler3) Measure the IAT sensor resistanceSpecial tool (A): 0990025008 (Multi-circuit tester set) Tester knob indication Resistance) IAT sensor resistance Approx2.6 at 20 (68 F) (Terminal Terminal)