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 TM 9-2320-364-20-1
ALTERNATOR TEST
(1) Start engine (TM 9-2320-364-10).
(a) If 10 to 14 vdc are not indicated
on the 12V voltmeter and 22 to
28 vdc are not indicated on the
24V voltmeter, turn OFF ENGINE
switch and go to electrical system
troubleshooting (Para 2-20).
(b) If 10 to 14 vdc are indicated on
the 12V voltmeter and 22 to
28 vdc are indicated on the
24V voltmeter, alternator is OK.
(2) Turn OFF ENGINE switch.
NOTE
Troubleshooting procedures for Codes
71 through 78 are the same for Codes
61 through 68.
DDR TEST
(1) Connect DDR to connector MC13.
(2) Turn ON ENGINE switch
(TM 9-2320-364-10).
(3) Select MODE 01 (ACTIVE CODES)
on DDR.
(a) If there are other codes
displayed, turn OFF ENGINE
switch and refer to Fault Index
(b) If there are only Codes 71 through
78 displayed, turn OFF ENGINE
switch and go to A4 Codes 61
through 68.
2-379
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