a. This section provides information for identifying malfunctions which may develop in the
CUCV. Because of the complexity of the CUCV, troubleshooting has been divided into two major
areas: mechanical troubleshooting (Table 2-1 ) and electrical troubleshooting (Table 2-2). The
troubleshooting symptom index (paragraph 2-3) provides a list of possible malfunctions, grouped
alphabetically by major truck system, with the location of steps that can be taken to correct the
b. For a better understanding of how a system operates, see Principles of Operation
(TM 9-2320-289-20). If youre unsure about the location of an item mentioned in troubleshooting,
refer to the maintenance task where the item is replaced. DO NOT perform the maintenance task
unless the troubleshooting table tells you to do so.
c. When troubleshooting a malfunction:
(1) Ensure that both batteries are fully charged.
(2) Ensure that components on the truck are in accordance with TM 9-2320-289-34P.
Use of improper components may result in any of the malfunctions described in Tables 2-1 or 2-2.
(3) Question the operator to obtain any information that might help determine the
cause of the problem. Also ensure that all applicable operator and unit maintenance troubleshooting
was performed before beginning troubleshooting procedures in this manual.
(4) Locate the symptom or symptoms in paragraph 2-3 that describe the malfunction.
Check both mechanical and electrical symptoms.
(5) Turn to the page in the troubleshooting table where the troubleshooting
procedures are listed. Headings at the top of each page show how each troubleshooting task is
organized: MALFUNCTION, TEST OR INSPECTION (in step number order), and CORRECTIVE
(6) Perform each step in the order listed until the malfunction is corrected, Steps are
listed in most probable cause sequence and continue through the least probable cause.