PARKING BRAKE SWITCH DOES NOT OPERATE - continued

TM 10-3930-673-20-1

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.

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

CIRCUIT BREAKER CB1

WIRE 3

WIRE 10

VOLTAGE TEST

(1) Remove battery cover (Para 8-42).

(2) Disconnect negative battery cable from

negative side of battery (Para 8-42).

(3) Remove four screws and access panel.

(4) Set multimeter to volts dc.

(5) Connect multimeter positive lead to

ENGINE START

wire 3 where wire 3 connects to circuit

WITCH

breaker (CB1).

(6) Connect multimeter negative lead to

known good ground.

(7) Connect negative battery cable to

negative side of battery (Para 8-42).

(8) Turn engine start switch to ON position,

BUT DO NOT START ENGINE

(TM 10-3930-673-10).

(a) If 24 vdc is present, go to Step 2 of

this fault.

(b) If 24 vdc is not present, repair

wire 3 (Para 8-48).

(9) Turn engine start switch to OFF

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

(10) Disconnect negative battery cable from

negative side of battery (Para 8-42).

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