Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Principles of Operation

PRINCIPLES OF OPERATION







The SJB is a multifunction module that controls many of the vehicle systems. Most of the SJB functions utilize hardwired inputs and/or outputs. The SJB controls the hardwired functions, using the corresponding inputs and outputs:

In addition, the SJB is involved in other vehicle systems through communication over the medium speed controller area network (MS-CAN). For a detailed list of SJB network inputs and outputs, refer to Information Bus (Module Communications Network), Principles of Operation.

Some SJB parameters are programmable. Two types of programmable parameters are available: vehicle configuration and customer preference.