TM 9-2320-387-24-l
BAlTERY CIRCUIT
KNOWN INFO
I
CONNECTlONS
OK
WATER LEVEL OK
BATTERY VOLTAGE
OK
ALTERNATOR
CIRCUIT
POSSIBLE
PROBLEMS
BATTERIES
CABLES
I
KNOWN INFO
BATTERIES OK
ALTERNATOR CIRCUIT OK
POSSIBLE
PROBLEMS
CABLES
KNOWN INFO
I
BATTERIES OK
NEGATIVE CABLE OK
ALTERNATOR CIRCUIT OK
POSSIBLE
PROBLEMS
CABLES
’ OPTIONS
IS BATTERY PAIR RESISTANCE
LESS THAN 25 MlLLlOHMS AND
BATTERY RESISTANCE CHANGE
LESS THAN 50
MILLIOHMS/SECOND?
STE/lCE-R TESTS 73,75
(Pages 2-602.2-504)
REASON FOR QUESTION
If either resistance reading is too
high, the batteries are probabty
weak and may not produce
enough power.
5 ]
TEST OPTtONS
/
IS THE STARTER NEGATIVE
1. STEIICE-R TEST 69
CABLE VOLTAGE DROP LESS
(Page 2-496)
THAN 0.25 VOLT?
2. MULTIMETER
REASON FOR QUESTION
A large voltage drop indicates high
resistance.
High resistance
means less current flow.
IS THE VOLTAGE DROP FROM
THE POWER STUD TO THE
STARTER LESS THAN
0.25 VOLT? TEST POINT IS THE
POWER STUD; GROUND IS THE
STARTER TERMINAL.
TEST OPTIONS
1. St-EXE-R
TEST 89
(Page 2-606)
2. MULTIMETER
REASON FOR QUESTtON
A large voltage drop indicates high
resistance.
High resistance
means less current flow.
