Volvo Truck Diagnostic Trouble Code (DTC)
The descriptions and service procedures contained in this manual are based on designs and technical
studies carried out through January 2013.
The products are under continuous development. Vehicles and components produced after the
above date may therefore have different specifications and repair methods. When this is deemed to
have a significant bearing on this manual, an updated version of this manual will be issued to cover
The new edition of this manual will update the changes.
In service procedures where the title incorporates an operation number, this is a reference to an V.S.
T. (Volvo Standard Times).
Service procedures which do not include an operation number in the title are for general information
and no reference is made to an V.S.T.
Each section of this manual contains specific safety information and warnings which must be reviewed
before performing any procedure. If a printed copy of a procedure is made, be sure to also
make a printed copy of the safety information and warnings that relate to that procedure. The following
levels of observations, cautions and warnings are used in this Service Documentation:
Note: Indicates a procedure, practice, or condition that must be followed in order to have the vehicle
or component function in the manner intended.
Caution: Indicates an unsafe practice where damage to the product could occur.
Warning: Indicates an unsafe practice where personal injury or severe damage to the product could
Danger: Indicates an unsafe practice where serious personal injury or death could occur.
Volvo Trucks North America, a division of Volvo Group North America,
Greensboro, NC USA
Engine Control Module (ECM), Aftertreatment Control
Module (ACM), Electrical System Version3
Diagnostic Trouble Code (DTC)