TM 10-3930-641-20
ELECTRICAL SYSTEMS TROUBLESHOOTING (CONT)
(Sheet 2 of 4)
PROBLEM NO. 3 (CONT)
NOTE 1: When testing for voltage, negative lead from your multimeter should be to ground (machine frame, etc.). See page 2-56.
NOTE 2: Always replace a wire with the same size (gage).
NOTE 3: Start engine after repair/replacement to ensure problem is solved.
ANSWER
NO
STEP
QUESTION OR INSTRUCTION
YES
REMARKS
Gain access to right side of engine.
Place transmission gear selector in reverse. With POWER switch
1
3
2
If YES, main power relay circuit is working.
in ON position does back-up alarm sound?
--
--
See PROBLEM 6, page 2-90.
2
Turn POWER switch to ON. Test for voltage present (NOTE 1)
3
at engine stop relay (6, page 2-70) terminals. Is battery voltage
present at terminal:
a. 1 - Where BR wire connects?
b. 3 - Where R wire connects?
C.
5 - Where O wire connects?
d. 4 - Where Y/O wire connects?
Is battery voltage present at engine stop solenoid terminal
4
5
7
Stop solenoid is located at governor on top of engine.
where BR wire connects?
TA 098598
Go on to Sheet 3
2-82
