Toyota T100 1996 Service Manual page 1874

w/ Tachometer
A
B
Fuel Gauge
Ignition
Switch
Battery
1996 TOYOTA T100 (RM449U)
BODY ELECTRICAL
Z09692
N06031
(3.4W)
(Wire Harness Side)
BE3235
− COMBINATION METER
3. INSPECT TACHOMETER ON−VEHICLE
(a) Connect a tune−up test tachometer, and start the engine.
NOTICE:
Reversing the connection of the tachometer will damage
the transistors and diodes inside. When removing or instal-
ling the tachometer, be careful not to drop or subject it to
heavy shocks.
(b) Compare the tester and tachometer indications.
DC 13.5 V 20°C at (68°F)
Standard indication (rpm)
700
3,000
5,000
7,000
If error is excessive, replace the tachometer.
4. INSPECT VOLT GAUGE SYSTEM
Measure the resistance between terminals A and B.
Resistance: Approx. 347 Ω
If resistance value is not as specified, replace the gauge.
5. INSPECT FUEL RECEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge.
(b) Turn the ignition switch ON, check that the receiver gauge
needle indicates EMPTY.
(c) Connect terminals 1 and 3 on the wire harness side con-
nector through a 3.4 watts test bulb.
(d) Turn the ignition switch ON, check that the bulb lights up
and the receiver gauge needle moves towards the full
side.
HINT:
Because of the silicon oil in the gauge, it will take a short time
for needle to stabilize.
If operation is not as specified, inspect the receiver gauge resis-
tance.
BE−39
Allowable range (rpm)
610 − 750
2,850 − 3,150
4,850 − 5,150
6,790 − 7,210