2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 506Get this manual
Quality of the image is intentionally reduced!
HONDAMATIC '05, '06: After '06:
2ESP Shift Switch Line Inspection (ECM side) Check for continuity at the ECM 21P (Black) connector terminals in each shift switch position (page 24-38)