2006-2009 Suzuki LT-R450 Service Manual, Page 181Get this manual
FI SYSTEM DIAGNOSIS
Step 1) Connect the TO sensor coupler and ECM coupler2) Insert the needle pointed probes to the lead wire coupler3) Turn the ignition switch ON4) Measure the voltage at the wire side coupler between BrIW and BBr wires_ TO sensor voltage (Normal): 0.41.4 (CB BrlWBBr)
Also, measure the voltage when leaning the vehicle5) Dismount the TO sensor from its bracket and measure the voltage when it is leaned 65 and more, left and right, from the horizontal level
TO sensor voltage (Leaning): 3.74.4 (CB BrWBBr) 09900-25009: Needle pointed probe set Tester knob indication: Voltage (:-:-:)
Is the voltage OK?
.RiOt! 09900-25008: Multi-circuit tester set
ECM coupler (Harness side)
BrIW, Red or BBr wire open or shorted to ground, or poor or connection If wire and connection are OK, intermittent trouYES