e3. 12 VDC AND 24 VDC CIRCUITS DO NOT OPERATE (CONT)
TEST OPTIONS
KNOWN INFO
7.
NO
Is continuity present from
terminal lug TL56 to
terminal lug TL57?
Circuit breakers CB70 OK.
Battery(ies) OK.
Cab to chassis ground strap
OK.
POSSIBLE PROBLEMS
Faulty PDP to cab ground
cable.
Faulty dashboard cable
assembly.
YES
REASON FOR QUESTION
If continuity is not present,
PDP to cab ground cable is
faulty. If continuity is present,
wire 1603 is faulty.
Continuity Test or
STE/ICE-R Test #91
Repair wire 1603 from terminal X3 on PDP
to terminal board TB2 position 1 on PDP
(para 2-40) or replace WTEC II dashboard
cable assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
Replace PDP to cab
ground cable (para 7-76).
TM 9-2320-365-20-1
2-256.10 Change 1