KNOWN INFO
WARNING
Read WARNING
on following page.
REASON FOR QUESTION
Is 24 VDC present at circuit
breaker CB39 socket 3 on
PDP?
3.
e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT)
NO
Go to step 13 of this fault.
YES
TEST OPTIONS
Voltage Test or
STE/ICE-R Test #89
This question eliminates
possible problems and
determines where
troubleshooting continues.
Service drive lights OK.
Circuit breaker CB70 OK.
Batteries OK.
100 AMP reverse polarity relay
OK.
100 AMP reverse polarity
relay to power distribution
panel (PDP) 24 VDC cable OK.
Battery to 100 AMP reverse
polarity relay 24 VDC cable
OK.
200 AMP reverse polarity
relay OK.
200 AMP terminal block OK.
Battery to 200 AMP terminal
block 24 VDC cable assembly
OK.
200 AMP terminal block to
reverse polarity relay 24
VDC battery cable OK.
200 AMP terminal block to
reverse polarity relay 24
VDC load cable OK.
200 AMP terminal block to
power distribution panel
(PDP) 24 VDC cable OK.
POSSIBLE PROBLEMS
Faulty relay K2.
Faulty master power switch.
Faulty dashboard cable
assembly.
TM 9-2320-365-20-1
2-262 Change 1
