2006-2009 Suzuki LT-R450 Service Manual, Page 132Get this manual
FI SYSTEM DIAGNOSIS
When connecting meter probe from the terminal side of the coupler (where connection from harness side not being possible), use extra care not to force and cause the male terminal to bend or the female terminal to openConnect the probe as shown to avoid opening of female terminalNever push in the probe where male terminal is supposed to fit Check the male connector for bend and female connector for excessive opening Also check the coupler for locking (looseness), corrosion, dust, etcCD Coupler ell Probe Where male terminal fits