2001-2003 Honda TRX500FA Factory Service Manual, Page 381Get this manual
HONDAMATIC Problem Code 11: ECM motor driver circutt Check the ECM 5P connector (2) and the control otor 2P connec tor (9) fo loose contact
Correct the faulty part
Disconnect the ECM 5P connecto 2)Measure the voltage between the Redlyellow ter mina (+1 of the ECM connector (2) and frame ground 1- )!I
r (11V or be low) - Open wire between the ECM and battery
Abnormal
l 1V or above (No rma )
Check for continuity between the Green termina of the ECM connector (2) and frame ground