KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
POSSIBLE PROBLEMS
Service drive lights OK.
Circuit breaker CB70 OK.
Batteries OK.
Is 24 VDC present at
terminal X1 on power
distribution panel (PDP)?
2.
e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT)
NO
Go to step 10 of this fault.
YES
Voltage Test or
STE/ICE-R Test #89
This question eliminates
possible problems and
determines where
troubleshooting continues.
WARNING
CAUTION
Read WARNING and
CAUTION on
following page.
TM 9-2320-365-20-1
2-260 Change 1
Faulty relay K2.
Faulty master power switch.
Faulty dashboard cable
assembly.
Faulty 100 AMP reverse
polarity relay.
Faulty 100 AMP reverse
polarity relay to power
distribution panel (PDP)
24 VDC cable.
Faulty battery to 100 AMP
reverse polarity relay 24 VDC
cable.
Faulty 200 AMP reverse
polarity relay.
Faulty 200 AMP terminal
block.
Faulty battery to 200 AMP
terminal block 24 VDC cable
assembly.
Faulty 200 AMP terminal block
to reverse polarity relay 24
VDC battery cable.
Faulty 200 AMP terminal block
to reverse polarity relay 24
VDC load cable.
Faulty 200 AMP terminal block
to power distribution panel
(PDP) 24 VDC cable.
