TM 5-3805-262-20
3-24. ACCESSORIES TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. WINDSHIELD WIPER MOTOR DOES NOT OPERATE (Cont).
S t e p 2 . ( C o n t ).
b. If windshield wiper and heater fan do not operate and circuit
breaker did not blow, go to step 3 below.
Step 3.
Remove engine left side panels (page 9-14).
Connect multimeter across terminals of cab 30 ampere circuit
b r e a k e r .
i n d i c a t e z e r o .
Multimeter should
a . I f m u l t i m e t er
step 4 below.
b. If multimeter
indicates 24 volts, circuit breaker is open. Go to
i n d i c a t e s z e r o, replace cab relay (page 5-26).
Step 4.
Disconnect battery ground cable (page 5-148).
Disconnect wire connected between cab relay BAT. terminal and cab 30
ampere circuit breaker long, silver terminal.
Reconnect battery ground cable.
Connect multimeter between long, silver terminal of cab 30 ampere
circuit breaker and chassis.
Multimeter shall indicate 24 volts.
a . I f m u l t i m e t e r i n d i c a t e s z e r o, replace cab 30 ampere circuit
breaker (page 5-26).
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