KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
Is continuity present from
terminal lug TL172 to
terminal lug TL174?
If continuity is not present,
200 AMP terminal block to
reverse polarity relay 12 VDC
load cable is faulty.
Continuity Test or
STE/ICE-R Test #91
YES
NO
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.
POSSIBLE PROBLEMS
17.
Faulty 200 AMP reverse
polarity relay.
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.
Replace 200 AMP terminal
block to reverse polarity relay
12 VDC load cable (para 20-60).
TM 9-2320-365-20-1
2-256.30 Change 1
e3. 12 VDC AND 24 VDC CIRCUITS DO NOT OPERATE (CONT)
