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TEST CONDITION NORMAL READING ABNORMAL READING REMARKS
• No-load voltage and current test.
• Engine speed – 2500 rpm.
• Connect boltmeter leads to the battery
posts.
• Connect the amperemater leads to
positive battery post and positive
cable.
(1) Less than DC 14 V and more than 28
A.
(2) Charging current is 0.5~28 A at the
charging voltage is 12~15 V.
(1) More than DC 15 V
and more than 28 A.
(1) Faulty regulator.
(2) Charging current is 0A. (1) Faulty regulator.
(2) Faulty alternator.
(3) Charging current is ON
(flow) but battery posts
voltage is low.
(1) Too mutch discharged battery.
(2) Faulty battery.
• Disconnect the alternator form the
regulator and connect the voltmeter
leads to the each out put terminals of
the alternator.
• Engine speed – 2500 rpm.
Terminal
o. 1 to No.2.
More than AC 23 V
(1) Less than AC 23 V.
(2) 0 V
(1) Reduce the magunetic field.
(2) Broken coil.
Terminal
No. 2 to No. 3.
Terminal
No. 3 to No. 1.
• Connect the circuit tester and inspect
the continuity test of the alternator
terminals.
• Engine stops.
Terminal
No. 1 to No.2.
Continuity No continuity
(1) Broken coil.
(2) Resistance of each terminal is
about 0.13 ohms at 20°C.
Terminal
No. 2 to No. 3.
Continuity No continuity
Terminal
No. 3 to No. 1.
Continuity No continuity
• Continuity test of the alternator each
terminals to coil plate.
• Engine stops.
No continuity Continuity Coil is short circuit.
3) Trouble Shooting (1)
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