2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 118Get this manual
Engine General Information and Diagnosis: P1651-H (Use of SDS) Step Action 1) Turn the ignition switch OFF2) Remove the left side coverRefer to "Exterior Parts Removal and Installation in Section 9D (Page 9D-4)"3) Check the TO sensor coupler for loose or poor contactsIf OK, then check the TO sensor lead wire continuityYes Go to Step 2 1A-54
No BrW wire shorted to VCC, or BBr wire open
I933H1110053-01