KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
NO
YES
Continuity Test or
STE/ICE-R Test #91
Circuit breaker CB70 OK.
Battery(ies) OK.
Cab to chassis ground strap
OK.
PDP to cab ground cable OK.
Shunt OK.
Starter to shunt 24 VDC cable
OK.
Battery to shunt cable
assembly OK.
Starter to chassis ground
cable OK.
200 AMP terminal
block OK.
200 AMP terminal block to
PDP 12 VDC cable OK.
200 AMP terminal block to
reverse polarity relay 12 VDC
load cable OK.
200 AMP terminal block to
reverse polarity relay 12
VDC battery cable OK.
POSSIBLE PROBLEMS
Faulty 200 AMP reverse
polarity relay.
Faulty battery to 200 AMP
terminal block 12 VDC cable
assembly.
19.
Is continuity present from
terminal lug TL47 to
terminal lug TL99?
If continuity is not present,
battery to 200 AMP terminal
block 12 VDC cable assembly,
is faulty. If continuity is
present, 200 AMP reverse
polarity relay is faulty.
Replace battery to 200 AMP terminal
block 12 VDC cable assembly
(para 20-63).
Replace 200 AMP reverse
polarity relay (para 20-58).
TM 9-2320-365-20-1
2-256.34 Change 1
e3. 12 VDC AND 24 VDC CIRCUITS DO NOT OPERATE (CONT)
