2005-2007 Polaris Ranger 500 service manual, Page 130Get this manual
ELECTRONIC FUEL INJECTION EFI SERVICE NOTES
General Service Information
For more convenient and accurate testing of EFI components, it is recommended dealers utilize the Digital WrenchTM Diagnostic Software (dealer only), or limited testing may be done manually using the procedures provided80 of all EFI problems are caused by wiring harness connectionsFollow common sense approach when diagnosing potential EFI issue: