TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 233 of 1207
TM 9-2320-361-20
Section VIl. STE/lCE TROUBLESHOOTING
(SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINES)
2-16. GENERAL
a. This section is applicable only if STE/ICE is available. The section contains information and tests
which may be used with STE/ICE to locate malfunctions that may develop in vehicle. Tests can be used
during troubleshooting, PMCS, or after replacing parts to isolate malfunctions, anticipate failures, and to
ensure that proper repairs have been made.
NOTE
See tables 2-8 and 2-9 for a listing of STE/ICE tests and their related page numbers.
b. STE/ICE is used primarily with the vehicle electrical system. These tests cannot cover all possible
malfunctions which may occur. If a particular malfunction is not covered, refer to Troubleshooting Index
(chapter 2) and locate troubleshooting procedure for malfunction observed. To obtain maximum number of
observed symptoms of the malfunction, question the operator.
2-17. STE/lCE CHAIN INDEX
Preventive Maintenance Checks and Services (table 2-1) contain a list of various malfunctions which may
occur during operation or inspection of vehicle. When one of the malfunctions listed occurs, the mechanic
proceeds to the associated STE/ICE Chain Index (tables 2-8 and 2-9).
2-18. VEHICLE TEST METER (VTM) TROUBLESHOOTING
The vehicle meter (VTM) troubleshooting procedures can be found in STE/ICE Go-Chain Tests (table
2-10). Additional VTM troubleshooting can be found in TM 9-4910-571-12&P, Simplified Test Equipment for
Internal Combustion Engines.
2-19. STE/lCE TESTS AND SETUP PROCEDURES
a. STE/ICE Tests.
The STE/ICE testing capabilities that may be applied to the M44A2 PMCS are listed
in table 2-9 and are included in table 2-11. Test capabilities that may be applied to troubleshooting are
specified in table 2-8.
b. STE/ICE Setup Procedure.
STE/ICE setup and internal checks (test no. G01, table 2-10) must be
performed prior to performing tests.
2-20. STE/lCE DESCRIPTION AND OPERATION
a. General.
The following describes operation of Simplified Test Equipment/Internal Combustion
Engines (STE/ICE) system and contains detailed operating procedures.
It is used to test serviceability of 2-1/2-ton vehicles and to perform primary fault detection and isolation.
After technician has identified a faulty part or subsystem, he is referred to a paragraph number for
replacement or repair procedures for individual parts.
2-148
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