Honda BF135A, BF150A Outboard Motors Shop Manual., Page 172Get this manual
Quality of the image is intentionally reduced!
BF135ABF150A 3IGP power line check -1 Turn the ignition switch OFFDisconnect the PGM-FI main relay 6P connector-2 Turn the ignition switch ONMeasure the voltage between the No.2 (BlackYellow) terminal