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Page Title:
12 VDC AND 24 VDC CIRCUITS DO NOT OPERATE (CONT) |
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 TM 9-2320-366-20-1
e3. 12 VDC AND 24 VDC CIRCUITS DO NOT OPERATE (CONT)
KNOWN INFO
TEST OPTIONS
17.
Continuity Test or
Circuit breaker CB70 OK.
STE/ICE-R Test #91
Battery(ies) OK.
Is continuity present from
REASON FOR QUESTION
Cab to chassis ground strap
terminal lug TL172 to
OK.
If continuity is not present,
terminal lug TL174?
PDP to cab ground cable OK.
200 AMP terminal block to
Shunt OK.
reverse polarity relay 12 VDC
Starter to shunt 24 VDC cable
load cable is faulty.
OK.
Battery to shunt cable
assembly OK.
Starter to chassis ground
NO
cable OK.
200 AMP terminal
block OK.
200 AMP terminal block to
Replace 200 AMP terminal
PDP 12 VDC cable OK.
YES
block to reverse polarity relay
POSSIBLE PROBLEMS
12 VDC load cable (para 20-49).
Faulty 200 AMP reverse
polarity relay.
Faulty 200 AMP terminal block
to reverse polarity relay 12
VDC load cable.
Faulty 200 AMP terminal block
to reverse polarity relay 12
VDC battery cable.
Faulty battery to 200 AMP
terminal block 12 VDC cable
assembly.
2-266.30
Change 1
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