Echo L4-1.5L (1NZ-FE) (2000)
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Temperature Gauge: Testing and Inspection
INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE WARNING LIGHT.
a. Disconnect the connector from the sender gauge.
b. Turn the ignition switch ON and check that the COOL warning light lights up.
c. Ground terminal 2 on the wire harness side, and check that the HOT warning light lights up.
If operation is as specified, replace the sender gauge. Then recheck the system.
If operation is not as specified, measure the receiver gauge resistance.
