VOLTAGE TEST -726280413

TM 9-2320-364-20-1

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical

circuits, a direct short may result. Damage to equipment, injury, or death to personnel may occur.

Circuit breakers CB5, CB6, CB12, CB20, CB22, CB23 and relays R3, R13 - R19, R26, R28, R32, R33 are

always electrically hot and can cause severe injury to personnel. Care must be exercised when working

under the electrical circuit board cover.

VOLTAGE TEST

(1) Connect positive (+) multimeter lead

to circuit breaker CB22 output

(lower) terminal.

(2) Connect negative (- ) multimeter lead

to a known good ground.

(3) Turn ON ENGINE switch

(TM 9-2320-364-10).

(a) If 10 to 14 vdc are not present,

turn OFF ENGINE switch and

replace circuit breaker CB22

(Para 7-16) and perform Step (7)

below.

(b) If 10 to 14 vdc are present, turn

OFF ENGINE switch and go to

Step (4) below.

(4) Connect positive (+) multimeter lead

to circuit breaker CB23 output

(lower) terminal.

(5) Connect negative (- ) multimeter lead

to a known good ground.

(6) Turn ON ENGINE switch.

(a) If 10 to 14 vdc are not present,

turn OFF ENGINE switch and

replace circuit breaker CB23

(Para 7-16) and perform Step (7)

below.

(b) If 10 to 14 vdc are present, turn

OFF ENGINE switch, perform

Step (7) below and go to Step 6

of this Fault.

(7) Install ECB cover and 15 screws.