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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)
KNOWN INFO
TEST OPTIONS
9.
Continuity Test or
Service drive lights OK.
STE/ICE-R Test #91
Circuit breaker CB70 OK.
Is continuity present from
REASON FOR QUESTION
Batteries OK.
relay K2 socket 87 on PDP
100 AMP reverse polarity relay
If continuity is not present, wire
to circuit breaker CB36
OK.
1604 is faulty. If continuity is
socket 6 on PDP?
100 AMP reverse polarity relay
present, bus bar X6 is faulty.
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.
Repair wire 1604 from relay K2 socket 87 on
Battery to 200 AMP terminal
PDP to bus bar X6 on PDP (para 2-45) or
block 24 VDC cable assembly
YES
replace WTEC II dashboard cable assembly
OK.
(para 7-10) or WTEC III dashboard cable
200 AMP terminal block to
assembly (para 7-11).
reverse polarity relay 24 VDC
battery cable OK.
200 AMP terminal block to
reverse polarity relay 24 VDC
load cable OK.
200 AMP terminal block to
power distribution panel (PDP)
24 VDC cable OK.
Master power switch OK.
Relay K2 OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
Replace bus bar X6 on PDP or replace
WTEC II dashboard cable assembly (para 7-10)
or WTEC III dashboard cable assembly
(para 7-11).
Change 1
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