STOPLIGHTS AND BLACKOUT STOPLIGHTS DO NOT OPERATE (Cont)

TM 9-2320-366-20-1

CONTINUITY TEST

(1) Set multimeter to ohms.

(2) Connect positive (+) probe of multimeter to

PDP, terminal 85, where relay K6 was removed.

(3) Connect negative (-) probe of multimeter to

ground.

NOTE

Full system air pressure is required

to actuate stoplights.

(4) Apply brakes (TM 9-2320-366-10-1) and note

reading on multimeter.

(5) If continuity is not present, go to step 5 of

this fault.

WARNING

Remove rings, bracelets, watches,

necklaces, and any other jewelry

before working around vehicle.

Jewelry can catch on equipment

and cause injury or short across

electrical circuit and cause severe

burns or electrical shock.

VOLTAGE TEST

(1)

Set multimeter to volts dc.

(2)

Connect positive (+) probe of multimeter to

PDP, terminal 30, where relay K6 was

removed.

(3)

Connect negative (-) probe of multimeter to

ground.

(4)

Position master power switch to on

(TM 9-2320-366-10-1) and note reading on

multimeter.

(5)

If 12 vdc is not present, repair wire 1641

(para 2-45) or replace WTEC II dashboard

cable assembly (para 7-10) or WTEC III

dashboard cable assembly (para 7-11).

(6)

Position master power switch to off

(TM 9-2320-366-10-1).

2-775