Honda BF35A-BF45A Outboard Motors Shop Manual., Page 383Get this manual
2POWER COIL Disconnect the 2P power coil connector, and measure the resistance between the terminalsStandard resistance
See page 6-1 for the power coil replacement
POWER COIL WIRE
3ECT (Engine Coolant Temperature) SENSOR
The sensor resistance decreases as the coolant temperature increases as shown on the right table1) Disconnect the 2P connector from the thermo sensor and measure the resistance between the sensor terminals at the room temperature
Standard resistance: kS2
2) Connect the 2P connector and start the engine and warm up the engine to normal operating temperature-