54-12
#259 Inspection of water level sensor
• Remove the water level sensor from the radiator.
• Turn the starter switch ON.
• Dip the water level sensor in a container filled with engine cool-
ant, and check that the pilot lamp goes on and out under the fol-
lowing conditions.
• If any fault is found, replace the sensor. (See Gr14.)
#262 Inspection of water temperature sensor
<For water temperature gauge>
• Dip the sensor in a container filled with engine oil.
• Raise the oil temperature to the specified one while stirring oil.
• Measure the resistance between terminals 1 and the body.
• If the measured value deviates from the standard value, replace
the sensor. (See Gr14.)
<For water temperature gauge>
• Dip the sensor in a container filled with engine oil.
• Raise the oil temperature to the specified one while stirring oil.
• Measure the resistance values between terminals 1 and the
body.
• If the measured value deviates from the standard value, replace
the sensor. (See Gr14.)
<For engine control>
• Dip the sensor in a container filled with engine oil.
• Raise the oil temperature to the specified one while stirring oil.
• Measure resistance values between terminals 1 and 2.
• If the measured value deviates from the standard value, replace
the sensor. (See Gr14.)
Condition Pilot lamp
When water level sensor is
out of the engine coolant
ON
When water level sensor is in
the engine coolant
OFF
Standard
value
50 ± 0.2 °C
80 ± 10 Ω
60 ± 0.2 °C 56.3 ± 5 Ω
80 ± 0.2 °C 29.5 ± 2.5 Ω
100 ± 0.3 °C 16.5 ± 0.9 Ω
106 ± 0.3 °C 14.3 ± 0.5 Ω
120 ± 0.3 °C 10 ± 0.3 Ω
Standard
value
50 ± 0.2 °C
80 ± 10 Ω
60 °C
56.3 Ω (reference value)
80 °C
29.5 Ω (reference value)
100 °C
16.5 Ω (reference value)
106 ± 0.3 °C
14.3 ± 1.0 Ω
120 °C
10 Ω (reference value)
Standard
value
20 °C
2.45 ± 0.14 kΩ
80 °C 0.32 kΩ (reference value)
110 °C
147.1 ± 2 Ω
#250 to #349 SENSOR
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