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 111 of 1078

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

0016 00

0016 00-12

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

NOTE

Test G01, VTM Connections and Checkout, must be

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

CHARGING CIRCUIT AND BATTERY VOLTAGE TEST

G04

DCA

MODE

1

SET ENGINE RPM:

• Run vehicle at 1200-1400 RPM.

• Turn vehicle headlights and accessories ON to load

charging system.

2

MEASURE BATTERY VOLTAGE:

• Dial 67 into TEST SELECT and press TEST.

• Watch display and verify that battery voltage is

within 26.5-29.5 volts.

• Is battery voltage within limits?

TEST NO.

TEST

67

BATTERY VOLTAGE

NOTE

After completing repair, rerun the GO-

Chain tests to verify that the problem is

fixed and that no other problems exist.

NO

YES

• Is battery voltage low?

NO

YES

• Battery voltage is high.

• Refer to Electrical Troubleshooting

(WP 0011 00) to troubleshoot

regulator and wiring.

• Battery voltage is low.

• Allow vehicle to run for 5 minutes at 1200-

1400 RPM and watch the display.

• Is the battery voltage within limits?

NO

YES

• Proceed to next page.

NG50

• Turn off headlights and accessories.

• Turn vehicle engine off.

• Proceed to Charging Circuit Tests,

NG50.