Version 16.10 AF-6600 AF-5000 Series Install Manual 137
Oil Temperature Sensor Installation
P/N: 40405
The standard P/N: 40405 oil temperature sensor is mounted on the
engine. The engine manual should show the proper location for the
sensor. The bushing is supplied with a crush type gasket that can
only be used once. The location is usually near the filter and
should be safety wired to the engine case. Replace the existing
vent plug with the supplied bushing and sensor. The Oil
Temperature Pressure sensor wire should be connected from the
harness to the transducer by crimping a standard #8 ring terminal
to the wire.
Pin 7 White/Brown
Optional 2 Wire Oil Temperature Sensors
If you oil temperature changes when you turn on and off electrical loads you have a bad engine case ground.
If you are unable to fix your engine ground you can install one of the optional two wire oil temp sensors.
AFS Part Number Vendor Vendor Part Number
P/N: 40412 UMA 1B3
P/N: 40415 Westach 399S9
Connect one sensor wire to the White/Brown wire and one to an EMS ground connection. Do NOT connect
to a ground on the engine.
Select the correct sensor part number in EFIS Calibration > Oil Temperature
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