BACK-UP ALARM DOES NOT OPERATE - continued

TM 10-3930-673-20-1

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.

Battery acid is harmful to skin and eyes. Always wear eye protection when working with batteries.

WIRE 2

BACK-UP ALARM

WIRE 21

VOLTAGE TEST

(1) Remove battery cover (Para 8-44).

(2) Disconnect negative battery cable from

negative side of battery (Para 8-44).

(3) Disconnect wire 21 and wire 2 from

back-up alarm.

(4) Set multimeter to volts dc.

(5) Connect multimeter positive (+) lead to

known good ground.

TRAVEL

(6) Connect multimeter negative () lead to

SELECT

known good ground.

LEVER

(7) Connect negative battery cable

(Para 8-44).

(8) Turn engine start switch ON, BUT DO

NOT START ENGINE (TM 10-3930-

673-10).

(9) Place travel select lever in reverse "R"

position (TM 10-3930-673-10).

(a) If 24 vdc is present, go to Step 14

of this fault.

(b) If 24 vdc is not present, go to

Step 2.

(10) Place travel select lever in neutral "N"

position (TM 10-3930-673-10).

(11) Turn engine start switch to OFF

position (TM 10-3930-673-10).

ENGINE START SWITCH

TR01094

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