2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 102Get this manual
Engine General Information and Diagnosis: Step Action 8) Measure the output voltage between BBl wire and groundSpecial tool (A): 0990025008 (Multi-circuit tester set) (B): 0990025009 (Needle pointed probe set) Tester knob indication Voltage) ECT sensor output voltage 0.2 4.9 ((+) terminal: BBl () terminal: Ground) Yes Go to Step 2 1A-38