(a) If a tester is not available, connect a voltmeter and
ammeter to the charging circuit as follows:
• Disconnect the wire from terminal B of the gener–
ator and connect the wire to the negative (–) ter–
minal of the ammeter.
• Connect the test lead from the positive (+ ) termi–
nal of the ammeter to terminal B of the generator.
• Connect the positive (+) lead of the voltmeter to
terminal B of the generator.
• Ground the negative (–) lead of the voltmeter.
(b) 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 250C (770F)
13.5 – 14.3 V at 1150C (239
F)
If the voltage reading is greater than standard voltage,
replace the IC regulator.
8. INSPECT CHARGING CIRCUIT WITH LOAD
(a) With the engine running at 2,000 rpm, turn on the high
beam headlights and place the heater fan control
switch at Hl.
(b) Check the reading on the ammeter.
Standard amperage: 30 A or more
If the ammeter reading is less than 30 A, repair the gener–
ator. (See page CH–5)
HINT: If the battery is fully charged, the indication will
sometimes be less than 30 A.
If the voltage reading is less than standard voltage, check
the IC regulator and generator as follows:
• With terminal F grounded, start the engine and check
the voltage reading of terminal B.
• If the voltage reading is higher than standard voltage,
replace the IC regulator.
• If the voltage reading is less than standard voltage, repair
the generator.
7. CHECK CHARGING CIRCUIT WITHOUT LOAD
HINT: If a battery/generator tester is available, connect
the tester to the charging circuit according to the manufac–
turer’s instructions.
–CHARGING SYSTEM On–Vehicle Inspection
CH–4
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