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 106 of 1078

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

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0016 00-7

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

• Connect P1 of transducer cable W4 to J2 on the VTM.

• Connect P2 of transducer cable W4 to the connector on

the current probe.

• Clamp the current probe around the positive battery

cable number 6 connected to the starter. Point the arrow

on the probe toward the starter.

• Crank the engine for several cycles with fuel shut off

switch engaged.

1

CONDITION CURRENT PROBE – DO OFFSET:

• Dial 72 into TEST SELECT.

• Press and hold TEST until CAL message appears

on the display.

• Release TEST.

• Wait for offset value to appear.

• Is the offset value within the limits of -225 to +225?

PROMPTING

MESSAGE

NOTE

If engine does not crank, proceed to

No Crank – No Start, NG20.

NOTE

If engine does not crank, proceed to

No Crank – No Start, NG20.

NO

YES

• Proceed to TM 9-4910-571-12&P

for offset fault isolation.

• When GO appears, shut off fuel by holding open fuel shutoff

switch, and depress the starter switch until OFF or an error

message is displayed.

• While cranking the engine with bad or discharged batteries, it

is possible for the VTM to lose power and come on again after

the cranking was stopped.

• Proceed to next page.

TEST NO.

TEST

72

STARTER CURRENT,

FIRST PEAK

(CURRENT PROBE)

2

MEASURE STARTER CURRENT – FIRST PEAK:

• Press TEST.

• Wait for prompting message GO to appear on the

display.

PROMPTING

MESSAGE

NOTE

Test G01, VTM Connections and Checkout, must be

performed before running any other STE/ICE-R test.

FIRST PEAK TEST – STARTER CURRENT

G02

DCA

MODE