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 130 of 1078

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

0017 00

0017 00-12

Table 2. STE/ICE-R NO-GO-Chain Tests (Contd)

STARTER CIRCUIT TESTS

NG80

DCA

MODE

NOTE

While cranking engine with bad or discharged batteries, it is possible for VTM

to lose power and come on again after cranking has stopped, displaying four

dashes. If this occurs, clean battery posts and clamps and try again. If VTM

still loses power, connect VTM power cable to good batteries in another vehicle

and perform following tests using test probe cable W2.

1

PERFORM CURRENT PROBE OFFSET:

• Turn off all vehicle electrical power.

• Dial 74 into TEST SELECT.

• Press and hold TEST until CAL message appears

on display.

• Release TEST.

• Wait for offset value to appear.

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

PROMPTING

MESSAGE

NO

YES

• Proceed to TM 9-4910-571-12&P

for offset fault isolation.

TEST NO.

TEST

74

STARTER

CIRCUIT

RESISTANCE

(CURRENT PROBE)

2

CHECK STARTER CIRCUIT RESISTANCE:

• Press TEST.

• When GO appears, engage fuel shutoff switch,

and attempt to crank engine.

• Stop cranking engine when VTM displays OFF

or an error message.

• Is a number displayed?

PROMPTING

MESSAGE

• Proceed to next page.

NOTE

Test GO1, VTM Connections and

Checkout, must be performed before

running any other STE/ICE-R test.