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Page Title:
24 VDC CIRCUITS DO NOT OPERATE (CONT) |
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 TM 9-2320-366-20-1
e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT)
WARNING
Read WARNING
KNOWN INFO
TEST OPTIONS
on following page.
13.
Voltage Test or
Service drive lights OK.
STE/ICE-R Test #89
Circuit breaker CB70 OK.
Is 24 VDC present at circuit
REASON FOR QUESTION
breaker CB30 socket 1 on
Batteries OK.
If 24 VDC is not present, wire
PDP?
100 AMP reverse polarity relay
1602 is faulty. If 24 VDC is
OK.
present bus bar X4 is faulty.
100 AMP reverse polarity relay
to power distribution panel
(PDP) 24 VDC cable OK.
Battery to 100 AMP reverse
polarity relay 24 VDC cable
OK.
NO
200 AMP reverse polarity relay
OK.
200 AMP terminal block OK.
Battery to 200 AMP terminal
block 24 VDC cable assembly
OK.
Repair wire 1602 from terminal X1
200 AMP terminal block to
on PDP to bus bar X4 on PDP (para 2-45)
reverse polarity relay 24 VDC
YES
or replace WTEC II dashboard cable
battery cable OK.
assembly (para 7-10) or WTEC III dashboard
200 AMP terminal block to
cable assembly (para 7-11).
reverse polarity relay 24 VDC
load cable OK.
200 AMP terminal block to
power distribution panel (PDP)
24 VDC cable OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
Replace bus bar X4 on PDP or
replace WTEC II dashboard cable
assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
2-284.8
Change 1
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