2001-2006 Honda TRX 300EX Sportrax 300EX Factory Service Manual, Page 292Get this manual
IGNITION SYSTEM IGNITION PULSE GENERATOR PEAK VOLTAGE Check cylinder compression and check that the spark plug is installed correctlyICM CONNECTOR
Disconnect he leM 4P connectorConnect the peek voltage adapter probes to the con nactor term inals of the wire harness side
Pe.k voltage adlptar
07HGJ0020100
PEAK VOLTAGE ADAPTER
(U.S.Aonlyl ith Comm ercially n.bldigltl multimeter (impedance 10 MODCII lnlmum or Peek voltage tester (U.S.Aonl yl CONNECTION: Blue Ve llow 1+1G'W hit H
Turn the igni tion switch ON Avoid touc ing the tester probes to pr event electric shockCrank the engine with the starter mOlor and read