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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
19.
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 TL47 to
OK.
If continuity is not present,
terminal lug TL99?
PDP to cab ground cable OK.
battery to 200 AMP terminal
Shunt OK.
block 12 VDC cable assembly,
Starter to shunt 24 VDC cable
is faulty. If continuity is
OK.
present, 200 AMP reverse
Battery to shunt cable
polarity relay is faulty.
assembly OK.
Starter to chassis ground
cable OK.
NO
200 AMP terminal
block OK.
200 AMP terminal block to
PDP 12 VDC cable OK.
Replace battery to 200 AMP terminal
200 AMP terminal block to
YES
block 12 VDC cable assembly
reverse polarity relay 12 VDC
(para 20-52).
load cable OK.
200 AMP terminal block to
reverse polarity relay 12
VDC battery cable OK.
POSSIBLE PROBLEMS
Faulty 200 AMP reverse
polarity relay.
Faulty battery to 200 AMP
terminal block 12 VDC cable
assembly.
Replace 200 AMP reverse
polarity relay (para 20-47).
Change 1
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