2006-2009 Suzuki LT-R450 Service Manual, Page 177Get this manual
FI SYSTEM DIAGNOSIS
Step 1) Turn the ignition switch OFF2) Measure the IAT sensor resistanceIAT sensor resistance: Approx2.6 kQ at 20 (68 F) (TerminalTerminal)
iT 09900-25008: Multi-circuit tester set 'illitQWj Tester knob indication: Resistance (Q)
Is the resistance OK?
ECM coupler (Harness side)
Dg or BBr wire open or shorted to ground, or poor or connection