Toyota T100 1996 Service Manual page 1229

1996 TOYOTA T100 (RM449U)
CHARGING (3RZ−FE)
(b)
If the voltage reading is greater than standard voltage, replace
the voltage regulator.
If the voltage reading is less than standard voltage, check the
voltage regulator and generator as follows:
Terminal F
10.
(a)
P20582
(b)
If the ammeter reading is less than standard amperage, repair
the generator.
HINT:
If the battery is fully charged, the indication will sometimes be
less than standard amperage.
− CHARGING SYSTEM
Connect the test lead from the positive (+) terminal
S
of the ammeter to terminal B of the generator.
Connect the positive (+) lead of the voltmeter to ter-
S
minal B of the generator.
Ground the negative (−) lead of the voltmeter.
S
Check the charging circuit as follows:
With the engine running from idling to 2,000 rpm, check
the reading on the ammeter and voltmeter.
Standard amperage:
10 A or less
Standard voltage:
At 25 °C (77°F): 14.0 − 15.0 V
At 115 °C(239 °F): 13.5 − 14.3 V
With terminal F grounded, start the engine and
S
check the voltage reading of terminal B.
If the voltage reading is higher than standard volt-
S
age, replace the voltage regulator.
If the voltage reading is less than standard voltage,
S
repair the generator.
INSPECT CHARGING CIRCUIT WITH LOAD
With the engine running at 2,000 rpm, turn on the high
beam headlights and place the heater fan control switch
to HI.
Check the reading on the ammeter.
Standard amperage:
30 A or more
CH−5