TOHATSU BFT115A Service Manual page 257

A/F SENSOR HEATER INSPECTION
Turn the combination switch OFF.
Disconnect the A/F sensor 4P connector
Measure the resistance between the No.3 (Black) and
No.4 (Black) terminals of the A/F sensor.
Resistance: 0.86 – 1.10 Ω (at 20 °C/68 °F)
If the resistance is not as specified, replace the A/F
sensor.
(1)
(1).
3
A/F SENSOR 4P CONNECTOR
SENSOR SIDE
(Black)
FUEL SYSTEM
(Black)
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