T100 Regular Cab Pickup 2WD L4-2693cc 2.7L DOHC MFI (1998)
Temperature 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, check that the receiver gauge needle indicates COOL.
c. Ground terminal on the wire harness side connected 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 operation is as specified, replace the sender gauge. Then, recheck the system
If operation is not as specified, measure the receiver gauge resistance.
INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE RESISTANCE
Measure the resistance between terminals.
w/ Tachometer:
w/o Tachometer: