TM-9-2350-277-20-1

CARRIER M113A3, M577A3, M1059A3, M1064A3, M1068A3 AND M58

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL VOLUME 1 OF 6

TM-9-2350-277-20-1 - Page 724 of 855

TM 9-2350-277-20-1

MSD/ICE TEST 69 STARTER NEGATIVE CABLE VOLTAGE DROP

DIAGNOSTIC TROUBLESHOOTING

0149 00

INITIAL SETUP:

Maintenance Level

Unit

Tools and Special Tools

Electrical Connector Pliers (WP 0926 00, Item 31)

MSD/ICE Test Set (WP 0926 00, Item 61)

Jumper Wire

Personnel Required

Mechanic

References

TM 9-6625-2301-14&P

Equipment Condition

Engine stopped (TM 9-2350-277-10)

Carrier blocked (TM 9-2350-277-10)

Power plant access door open (TM 9-2350-277-10)

Driver’s power plant access panel removed

(WP 0441 00)

T

1.

Remove plug W1P1 from MSD jack J1.

2.

Hook up MSD to carrier batteries. See TM 9-6625-2301-14&P.

3.

Set up Test 89. See TM 9-6625-2301-14&P.

4.

Measure resistance between W1P1 (1), pin W (2) and

harness 12354593 circuit 779 terminal E4 (3) on battery

negative terminal (4).

5.

Measure resistance between W1P1 (1), pin M (5) and harness

12354672 circuit 773 terminal E2 (6) on starter ground stud (7).

6.

Does MSD read more than one ohm either time?

TN

1.

Faulty MSD.

2.

Notify supervisor.

014900-1

Change 5