2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 74Get this manual
Engine General Information and Diagnosis:
Self-Diagnostic Procedures
Use of mode select switch NOTE
B933H21104002
Do not disconnect coupler from ECM, the battery cable from the battery, ECM ground wire harness from the engine or main fuse before confirming DTC (Diagnostic Trouble Code) stored in memorySuch disconnection will erase memorized information in ECM memory DTC stored in ECM memory can be checked by the special tool Before checking DTC, read self-diagnosis function "User mode and dealer mode" (Refer to "Self-Diagnostic Procedures (Page 1A-10)" carefully to have good understanding as to what functions are available and how to use it Be sure to read "Precautions for Electrical Circuit Service" (Refer to "Precautions for Electrical Circuit Service in Section 00 (Page 00-2)" before inspection and observe what is written there1) Remove the left side coverRefer to "Exterior Parts Removal and Installation in Section 9D (Page 9D4)"2) Connect the special tool to the mode select switch coupler at the wiring harnessSpecial tool (A): 0993082720 (Mode select switch)