2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 125Get this manual
1A-61 Engine General Information and Diagnosis: Troubleshooting NOTE After repairing the trouble, clear the DTC using SDS toolRefer to "Use of SDS Diagnosis Reset Procedures (Page 1A-12)" Injector voltage can be detected only for seconds after ignition switch is turned ONStep Action 1) Turn the ignition switch OFF2) Remove the fuel tank lower coverRefer to "Fuel Tank Removal and Installation in Section 1G (Page 1G-9)"3) Check the injector coupler for loose or poor contactsIf OK, then measure the injector resistanceYes Go to Step 2No Replace the injector with new oneRefer to "Fuel InjectorFuel Delivery PipeL-joint Removal and Installation in Section 1G (Page 1G-11)" I933H1110064-02