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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
2.
Circuit breakers CB70 OK.
Continuity Test or
Battery(ies) OK.
STE/ICE-R Test #91
Is continuity present from
POSSIBLE PROBLEMS
REASON FOR QUESTION
terminal X3 on power
This question eliminates
distribution panel (PDP) to
Faulty cab to chassis ground
possible problems and
terminal lug TL64?
strap.
determines where
Faulty PDP to cab ground
troubleshooting continues.
cable.
Faulty dashboard cable
assembly.
Faulty shunt.
Faulty starter to shunt 24 VDC
NO
cable.
Faulty battery to shunt cable
assembly.
Faulty starter to chassis
ground cable.
YES
Go to step 6 of this fault.
Faulty 100 AMP reverse
polarity relay.
Faulty battery to 100 AMP
reverse polarity relay 12 VDC
cable.
Faulty 100 AMP reverse
polarity relay to PDP 12 VDC
cable.
Faulty 200 AMP reverse
polarity relay.
Faulty 200 AMP terminal
block.
Faulty 200 AMP terminal block
to PDP 12 VDC cable.
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.
Change 1
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