12 VDC AND 24 VDC CIRCUITS DO NOT OPERATE (CONT)

TM 9-2320-366-20-1

e3. 12 VDC AND 24 VDC CIRCUITS DO NOT OPERATE (CONT)

KNOWN INFO

TEST OPTIONS

Continuity Test or

Circuit breakers CB70 OK.

STE/ICE-R Test #91

Battery(ies) OK.

Is continuity present from

Cab to chassis ground strap

REASON FOR QUESTION

terminal lug TL56 to

OK.

If continuity is not present,

terminal lug TL57?

POSSIBLE PROBLEMS

PDP to cab ground cable is

faulty. If continuity is present,

Faulty PDP to cab ground

wire 1603 is faulty.

cable.

Faulty dashboard cable

assembly.

YES

Replace PDP to cab

ground cable (para 7-126).

Repair wire 1603 from terminal X3 on PDP

to terminal board TB2 position 1 on PDP

(para 2-45) or replace WTEC II dashboard

cable assembly (para 7-10) or WTEC III

dashboard cable assembly (para 7-11).

2-266.10

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