LX 450 L6-4.5L (1FZ-FE) (1996)
Temperature Gauge: Testing and Inspection
Fig. 80 Temperature Gauge Terminal Locations
1.
Disconnect connector from sender gauge.
2.
Turn ignition switch ON, then check receiver gauge needle indicates COOL.
3.
Ground terminal on wire harness side connector through a 3.4W test bulb.
4.
Turn ignition switch ON, then check bulb lights up and receiver gauge needle moves toward hot side.
5.
If operation is as specified, replace sender gauge, then recheck system.
6.
If operation is not as specified, measure receiver gauge resistance between terminals A, B and C.
7.
Resistance should be as follows:
a. A-B: about 71.0-79.0 ohms.
b. A-C: about 117.0-141.0 ohms.
c. B-C: about 185.0-215.0 ohms.
8.
If resistance is not as specified, replace receiver gauge.