TM 9-2320-387-24-l
BATTERY CIRCUIT
I
KNOWN INFO
I
BATTERY RESISTANCE
NO GOOD
1
POSSIBLE
PROBLEMS
1
BATTERIES
CABLES
KNOWN INFO
BATTERIES OK
POSSIBLE
PROBLEMS
CABLES
lB*
IS EACH BAlTERY RESISTANCE
LESS THAN 25 MILLIOHMS AND
EACH BATTERY RESISTANCE
CHANGE LESS THAN 50
MILLIOHMS/SECOND
?
DIAGNOSTIC FLOWCHART
1 TEST OPTIONS
1. REARRANGE
BATTERY BOX
TO TEST ONE BATTERY.
2. RUN STEIICE-R TESTS 73.75.
(Pages 2-502,2-6&l).
REASON FOR QUESTlON
If either resistance reading is too
high, the batteries are probably
weak and may not produce
enough power.
r 82 1
CHECK THE VOLTAGE DROP
ACROSS ALL CABLES IN THE
BAll-ERY
BOX (SEE NOTE AT
RIGHT) AND THE POSITIVE AND
NEGATIVE CABLES TO THE
STARTER. ARE ALL VOLTAGE
DROPS LESS THAN 0.25 VOLT?
ITEST
I
OPTIONS
1. STEIlCE-R TEST 69
(Page 2-506)
2. STEIlCE-R TEST 74 (STARTER
CIRCUIT RESISTANCE)
OR TEST
69 (NEGATIVE CABLE DROP) OR
TEST 66 (STARTER MOTOR.
VOLTAGE)
(Pages 2-503,2-496,
2-497)
3. MULTIMETER
REASON FOR QUESTION
Everything else has checked OK.
These cables are the only thing in
the battery circuit we haven’t
tested.
1
I
NO FAULTS FOUND.
(IF YOU USED TESTS 73 & 75 IN
STEP 4, P. 2-240, YOU MAY HAVE
A PROBLEM WITH THE DCA.
CHECK THE DCA CONNECTIONS
AND TRY RUNNING STEP 4
USING TESTS 77 & 79.) SEE
NOTE TO RIGHT.
2-244
