Toyota Tundra 2005 Service - Repair - Maintenance page 2184

Ammeter
Battery
Voltmeter
CHARGING (1GR−FE)
Disconnect Wire
from Terminal B
B
Generator
Z10324
− CHARGING SYSTEM
(b) If a tester is not available, connect a voltmeter to the
charging circuit as follows.
(1) Disconnect to the wire from terminal B of the gener-
ator and connect it to the negative (−) lead of the
ammeter.
(2) Connect the positive (+) lead of the ammeter to ter-
minal B of the generator.
(3) Connect the positive (+) lead of the voltmeter to ter-
minal B of the generator.
(4) Ground the negative (−) lead of the voltmeter.
(c) Check the charging circuit.
(1) With the engine running from idle to 2,000 rpm,
check the reading on the ammeter and voltmeter.
Standard amperage: 10 A or less
Standard voltage: 13.2 to 14.8 V
HINT:
S
If the voltmeter reading is more than standard voltage, re-
place the voltage regulator.
S
If the voltmeter reading is less than the standard voltage,
check the voltage regulator and generator as follows:
10. INSPECT CHARGING CIRCUIT WITH LOAD
(a) With the engine running at 2,000 rpm, turn on the high
beam headlights and place the heater blower switch at
"HI".
(b) Check the reading on the ammeter.
Standard amperage: 30 A or more
HINT:
S
If the ammeter reading is less than standard amperage,
repair the generator.
S
If the battery is fully charged, the indication will sometimes
be less than standard amperage.
CH−3