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Toyota Workshop Service and Repair Manuals

Temperature Switch (Warning Indicator) > < Circuit Test
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Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
Component Inspection

Ohmmeter Connection

Fig. 59 Coolant thermo sensor test specifications

1.

Disconnect electrical connector from sensor and measure resistance between sensor terminals,Fig. 48.

2.

If measured resistance does not correspond to values shown in graph, Fig. 59, sensor is defective.

Temperature Switch (Warning Indicator) > < Circuit Test