TM-9-2320-361-24-1

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2

AUGUST 2006

TM-9-2320-361-24-1 - Page 296 of 1176

TM 9-2320-361-24-1

0017 00

0017 00-14

SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINE—REPROGRAMMABLE

(STE/ICE-R) GO CHAIN TROUBLESHOOTING (Contd)

Table 2. STE/ICE-R Go Chain Test (Contd).

NO

YES

NO

YES

NO

YES

CHARGING CIRCUIT AND BATTERY VOLTAGE TEST

G05

TK

MODE

NOTE

Test GO1, VTM Connections and Checkout, must be

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

• Is battery voltage within limits?

NOTE

After completing repair, rerun

GO-Chain tests to verify that

the problem is fixed and no

other problems exist.

• Battery voltage is low.

• Allow vehicle to run for 5 minutes at fast

idle and watch the display.

• Is the battery voltage within limits?

• Battery voltage is high.

• Refer to Electrical System Troubleshooting

Index (WP 0011 00) to troubleshoot

regulator and wiring. If regulator is built

into alternator, replace entire unit

(WP 0085 00).

• Is battery voltage low?

• Turn off headlights and accessories.

• Turn vehicle engine off.

• Proceed to Charging Circuit Test, NG 50.

• Proceed to next page.

SET ENGINE RPM:

• Run vehicle at 1000–1200 RPM.

• Turn vehicle headlights and/or accessories ON to

load charging system.

1

MEASURE BATTERY VOLTAGE:

• Dial 67 into TEST SELECT switches and press

TEST.

• Watch display and verify that battery voltage is

within 26.5–29.5 VDC.

2

TEST NO.

TEST

67

BATTERY VOLTAGE

NG50

(WP 0018 00)