Honda BF115A, BF130A Outboard Motors Shop Manual., Page 102Get this manual
From P5-15
1) Turn the ignition switch OFF2) Connect the test box's A3 terminal to the body ground3) Turn the ignition switch ON4) Check whether the warning buzzer soundsN0 Does the buzzer sound? Repair open in the YG wire between the warning buzzer and the ECMCheck the warning buzzer (P1730)
JUMPER WIRE
TEST HARNESS
1) Turn the ignition switch OFF2) Connect the test box's A27 terminal to the body ground3) Turn the ignition switch ON4) Check whether the red overheat light comes onCheck the remote control system harnesses and the ignition switch (P17-29)
JUMPER WIRE
Repair open in the wire between the overheat light and the ECMReplace the blown overheat light bulbCheck the remote control system harnesses and the ignition switch (P17-29)
Does the light come on?