Inspection Of Water Temperature Sensor; Inspection Of Neutral Switch (Tiller Handle Model); Inspection Of Start Switch (Tiller Handle Model) - TOHATSU MFS25 Service Manual

7) Inspection of Water Temperature Sensor

Remove water temperature sensor to test it as a
separate unit.
1. Remove water temperature sensor from engine.
2. Put water temperature sensor in the water, and warm up
water slowly.
3. Measure water temperature sensor resistance. Replace if
the resistance is out of specified range.
Water Temperature Sensor Resistance (Reference Value) :
Between Black/Yellow (B/Y) - Black (B)
2.4 to 2.9 Ω ( at 20°C )
0.29 to 0.32 Ω ( at 80°C )
8) Inspection of Neutral Switch
(Tiller Handle Model)
This test can be made without removing parts.
1. Check electrical conductivity of neutral switch. Replace if no
conductivity.
Switch Position
a
Free
Pushed b
9) Inspection of Start Switch
(Tiller Handle Model)
1. Check electrical conductivity of start switch. Replace if no
conductivity.
This test can be made without removing parts.
Switch Position
Free : OFF
Pushed : ON
25/30 2006
Lead Wire Color
Green (G) Green (G)
Lead Wire Color
Green (G) Red (R)
b a
OFF
ON
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