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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)
WARNING
CAUTION
Read WARNING and
CAUTION on
KNOWN INFO
TEST OPTIONS
following page.
4.
Circuit breaker CB70 OK.
Voltage Test or
Battery(ies) OK.
STE/ICE-R Test #89
Is 12 VDC present at
Cab to chassis ground strap
REASON FOR QUESTION
terminal X2 on PDP?
OK.
This question eliminates
PDP to cab ground cable OK.
possible problems and
Shunt OK.
determines where
Starter to shunt 24 VDC cable
troubleshooting continues.
OK.
Battery to shunt cable
assembly OK.
NO
Starter to chassis ground
cable OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
YES
Go to step 11 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.
2-266.4
Change 1
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