Tundra 4WD V6-3.4L (5VZ-FE) (2004)
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Temperature Sensor (Gauge): Testing and Inspection
INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge.
(b) Turn the ignition switch ON, and check that the receiver gauge needle indicates cool side.
(c) Ground the terminal of the wire harness side connecter through a 3.4 W test bulb.
(d) Turn the ignition switch ON, check that the bulb lights up and the receiver gauge needle moves to the hot side.
If the operation is not as specified, measure the receiver gauge resistance.
