KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
9.
e4. 24 VDC CIRCUITS DO NOT OPERATE (CONT)
NO
YES
Continuity Test or
STE/ICE-R Test #91
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.
Master power switch OK.
Relay K2 OK.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
Replace bus bar X6 on PDP or replace
WTEC II dashboard cable assembly (para 7-10)
or WTEC III dashboard cable assembly
(para 7-11).
If continuity is not present, wire
1604 is faulty. If continuity is
present, bus bar X6 is faulty.
Repair wire 1604 from relay K2 socket 87 on
PDP to bus bar X6 on PDP (para 2-40) or
replace WTEC II dashboard cable assembly
(para 7-10) or WTEC III dashboard cable
assembly (para 7-11).
Is continuity present from
relay K2 socket 87 on PDP
to circuit breaker CB36
socket 6 on PDP?
TM 9-2320-365-20-1
2-274 Change 1
