2006-2009 Suzuki LT-R450 Service Manual, Page 174Get this manual

2006-2009 Suzuki LT-R450 Service Manual, Page 174

FI SYSTEM DIAGNOSIS "C21" (P011 O-HL) IAT SENSOR CIRCUIT MALFUNCTION DETECTED CONDITION C21 Output voltage is not within
the ignition switch OFF2) Remove the seat(c::::7'7 -6) 3) Check the IAT sensor coupler for loose or poor contacts If OK,
then measure the IAT sensor voltage at the wire side coupler4) Disconnect the coupler and turn the ignition switch ON 5)
Measure the voltage between Dg wire terminal and ground 6) If OK, then measure the voltage between Dg wire terminal and BBr
wire terminal BlAT sensor input voltage: 4.55.5 DgGround) () DgBBr) () ITut09900-25008: MUlti-circuit tester set Tester knob