IT IS YOUR RESPONSIBILITY to be completely familiar with the warnings and cautions
used in this manual. These warnings and cautions advise against using specific service
procedures that can result in personal injury, equipment damage, or cause the equipment to
become unsafe. These warnings and cautions are not exhaustive. Allison Transmission could
not possibly know, evaluate, or advise the service trade of all conceivable procedures by which
service might be performed or of the possible hazardous consequences of each procedure.
Consequently, Allison Transmission has not undertaken any such broad evaluation.
Accordingly, ANYONE WHO USES A SERVICE PROCEDURE OR TOOL WHICH IS NOT
RECOMMENDED BY ALLISON TRANSMISSION MUST first be thoroughly satisfied
that neither personal safety nor equipment safety will be jeopardized by the service proce-
Also, be sure to review and observe WARNINGS, CAUTIONS, and NOTES provided by the
vehicle manufacturer and/or body builder before servicing the Allison transmission in that
Proper service and repair is important to the safe and reliable operation of the equipment. The
service procedures recommended by Allison Transmission and described in this manual are
effective methods for performing troubleshooting operations. Some procedures require using
specially designed tools. Use special tools when and in the manner recommended.
WARNINGS, CAUTIONS, AND NOTES
Three types of headings are used in this manual to attract your attention:
Is used when an operating procedure, practice, etc., is essential to highlight.
Is used when an operating procedure, practice, etc., which, if not correctly followed,
could result in injury or loss of life.
Is used when an operating procedure, practice, etc., which, if not strictly observed, could
result in damage to or destruction of equipment.
W T E C I I I E L E C T R O N I C C O N T R O L S T R O U B L E S H O O T I N G M A N U A L
The WARNINGS, CAUTIONS, and NOTES in this manual apply only to the Allison transmission
and not to other vehicle systems which may interact with the transmission. Be sure to review and
observe any vehicle system information provided by the vehicle manufacturer and/or body builder
at all times the Allison transmission is being serviced.
IMPORTANT SAFETY NOTICE