TM-9-2320-386-24-1-1

2-1/2-TON, 6X6, M44A3 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; EXTENDED SERVICE PROGRAM (ESP); UNIT, DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL; VOLUME 1 OF 2

MAY 2001

TM-9-2320-386-24-1-1 - Page 102 of 1078

TM 9-2320-386-24-1-1

0016 00

0016 00-3

Table 2. STE/ICE-R GO-Chain Tests (Contd)

VTM CONNECTIONS AND CHECKOUT

(Contd)

G01

DCA

MODE

• Does display light up?

YES

NO

2

DISPLAY DOES NOT LIGHT UP, PROCEED AS FOLLOWS:

• PULL OFF power switch.

• Check and clean all battery connections and

interconnecting cables.

• PUSH ON power switch.

• Does the VTM display .8.8.8.8 and then change

to – – – –?

• If only a portion of .8.8.8.8 or

– – – –

is

displayed, a display module may be burned

out. Refer to TM 9-4910-571-12&P for

module replacement.

• Return to step 1.

1

NO

YES

• Proceed to step 3.

3

• No power for VTM. Connect to

a known good battery to see if

problem is the vehicle or the VTM.

NO

YES

• Check the vehicle battery electrolyte level.

• Clean vehicle battery terminals.

• Refer to TM 9-6140-200-14 to check vehicle battery specific gravity.

• Charge vehicle battery.

• Return to step 1.

• If problem repeats, look for broken or loose connections in DCA wiring

from battery or in cable W1.

1

• Proceed to TM 9-4910-571-12&P for

fault isolation of cable W1.

• If cable is bad, replace cable W1.

• If cable is good, replace STE/ICE-R.

• PULL OFF power switch.

• Use power cable W5 to connect to a known good battery.

• PUSH ON power switch.

• Does the VTM display .8.8.8.8 and then change to – – – –?