Toyota 3S-GE Repair Manual page 476

CH-12
CHARGING SYSTEM — ON—VEHlCLE INSPECTION
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(b)
INSPECT CHARGING CIRCUIT WITHOUT LOAD
HINT: If a battery/alternator tester is available, con-
nect the tester to the charging circuit as per
manufacturer's instructions.
If a tester is not available. connect a voltmeter and
ammeter to the charging circuit as follows:
O Disconnect the wire from terminal B of the alter-
nator. and connect it to the negative (—) tester
probe of the ammeter.
0 Connect the positive (+) tester probe of the am-
meter to terminal B of the alternator.
0 Connect the positive (+) tester probe of the volt-
meter to terminal B of the alternator.
0 Ground the negative (—) tester probe of the volt-
meter.
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:
13.9 — 15.1 V at 25°C (77°F)
13.5 — 14.3 V at 115°C (239°F)
If the voltmeter reading is more than standard voltage,
replace the IC regulator.
If the voltmeter reading is less than standard voltage.
check the IC regulator and alternator as follows:
O With terminal F grounded, start the engine and
check the voltmeter reading of terminal B.