Toyota Celica 2005 Repair Manual page 2227

BE−52
3
2
Engine Coolant Temperature
Gauge
Ignition
Switch
Battery
Engine Coolant Temperature gauge
Battery
2005 CELICA (RM1131U)
BODY ELECTRICAL
7.
Measure the resistance between terminals 2 and 3 for each
float position.
1/2
F
E
If resistance value is not as specified, replace the sender
I11639
gauge.
8.
(a)
(b)
Sender
Gauge
N17290
(c)
(d)
Test Bulb
(3.4 W)
If operation is not as specified, inspect the sender gauge.
Then recheck the system.
Z07424
9.
35.63 ±
Connect the wire harness as shown in the illustration, and ad-
0.1 Ω
just the ammeter pointer to indicate "0" using the slide rheostat,
then read the rheostat indication.
Slide
rheostat
If resistance value is not as specified, replace the engine cool-
ant temperature sender gauge.
35.63 ± 0.1 Ω
I07709
− COMBINATION METER
INSPECT FUEL SENDER GAUGE RESISTANCE
Float position: mm (in.)
F: Approx. 75.9 (2.99)
1/2: Approx. 17.2 (0.68)
E: Approx. 50.8 (2.00)
INSPECT ENGINE COOLANT TEMPERATURE RE-
CEIVER GAUGE OPERATION
Disconnect the connector from the sender gauge.
Turn the ignition switch ON, then check that the receiver
gauge needle indicates COOL.
Ground the terminal of the wire harness side connector
through a 3.4 W test bulb.
Turn the ignition switch ON, check that the bulb lights up
and the receiver gauge needle moves toward the hot
side.
INSPECT ENGINE COOLANT TEMPERATURE SEND-
ER GAUGE RESISTANCE
Temperature °C (°F)
50 (122.0)
120 (248.0)
2226
Resistance (Ω)
Approx. 3.0
Approx. 31.6
Approx. 110.0
Resistance (Ω)
160 − 240
17.1 − 21.2