2001-2003 Honda TRX500FA Factory Service Manual, Page 329Get this manual
20IGNITION SYSTEM SERVICE INFORMATION TROUBLESHOOTING IGNITION SYSTEM INSPECTION
20-1 20-2 20-3
IGNITION COIL IGNITION TIMING
SERVICE INFORMATION
GENERAL
Some elect rica components ma be da maged if te rmina ls or connectors are connected or disconnected while the ignit io sw it ch is ON and current is presentWhen serv ici ng the ignition system, always fo llow he ste ps in he troubleshooting on page 20-2This vehicle's Ign it ion Contro Module (leis bu ilt in th Engine Control odule (Ee )The ig nit io im ing cann ot be adjusted since he EeM is fa ctory presetThe EeM may be damaged if droppedA lsoif the con nector is disconnected when current is flowing, he excessive vol tage ma damage the EeMAlways turn off the ignition switch before servicingA faulty ignition system is often related to poo con nect io nsCheck those connections before proceedingMake sure the battery is adequately charged Using the starter motor with weak battery result in slower engine cranking speed as ell as no spark at the spa rk plug This vehicle's spark plug is equipped wit irid ium type electrode Do not use any spark plug other than spe cified See secti on 11 for ig nition pu lse generato rem ov al{i nsta lat ionSee secti on 22 for ollowing co onent s:igniti on switcheng ine stop switchreverse sw itch See sect ion 23 for gear posit ion sw itch information