TM 10-3930-641-20
ELECTRICAL SYSTEMS TROUBLESHOOTING (CONT)
PROBLEM NO. 1 (CONT)
(Sheet 5 of 6)
ANSWER
STEP
QUESTION OR INSTRUCTION
YES
NO
REMARKS
15
Test for voltage present at large terminal on starter relay (7, page
See page 2-70.
17
16
2-70) where R wire connects. Is battery voltage present?
16
Repair/replace R wire from starter relay (7) to main power relay
R wire must be 8-gage.
--
--
(11, page 2-70).
17
Turn POWER switch to START. Test for battery voltage at
starter solenoid. Is battery voltage present at starter solenoid
--
--
terminal:
a SOL - where 10 gage W wire connects?
17B
20
b Where solenoid connects to starting motor frame?
19
18
18
Replace starter solenoid.
--
--
See page 2-261.
19
Replace starting motor. Turn main disconnect switch to OFF.
See page 2-261.
20
Test W wire between starter solenoid and starter relay for
22
21
continuity with W wire isolated. Is there continuity?
21
Repair/replace W10-gage wire from starter relay to starter
W wire must be 10-gage.
22
end
solenoid. Main disconnect switch OFF. Does problem still exist?
22
Replace starter relay. Turn main disconnect switch to OFF.
See page 2-337.
Change 2
2-78
