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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
6.
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 85 on PDP
100 AMP reverse polarity relay
If continuity is not present,
to ground?
OK.
wire 3041 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
NO
OK.
200 AMP reverse polarity relay
OK.
Repair wire 3041 from terminal board
200 AMP terminal block OK.
TB2 position 43 on PDP to relay K2 socket
Battery to 200 AMP terminal
YES
85 on PDP (para 2-45) or replace WTEC II
block 24 VDC cable assembly
dashboard cable assembly (para 7-10) or WTEC
OK.
III dashboard cable assembly (para 7-11).
200 AMP terminal block to
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.
POSSIBLE PROBLEMS
Faulty relay K2.
Faulty dashboard cable
assembly.
2-278
Change 1
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