2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 108Get this manual
Engine General Information and Diagnosis: Step Action 6) Check the continuity between the wire and terminal "13"Also, check the continuity between the GB wire and terminal "6"Tester knob indication Continuity) ECM coupler (Harness side) (A)
Yes Go to Step 2
No and GB wire open, G wire shorted to the ground
I933H1110023-01