Milan FWD L4-2.3L (2008)
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Driver door module (DDM) (if equipped)
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Driver seat module (DSM) (if equipped)
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Dual climate control seat module (DCSM) (if equipped)
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Heating ventilation air conditioning (HVAC) module
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Instrument cluster (IC)
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Parking aid module (PAM)
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Satellite digital audio receiver system (SDARS) module (if equipped)
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Smart junction box (SJB)
HS-CAN Operation
The HS-CAN communicates using bussed messages. The HS-CAN uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In
addition to scan tool communication, this network allows sharing of information between all modules on the network.
The HS-CAN is a high speed communication network used for the following modules:
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Accessory protocol interface module (APIM) (if equipped)
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ABS module
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Instrument cluster (IC)
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Occupant classification system module (OCSM)
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PCM
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Restraints control module (RCM)
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Transmission control module (TCM) (if equipped)
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4X4 control module
Network Termination
The CAN uses a network termination circuit to improve communication reliability. The network termination of the CAN bus takes place inside the
termination modules by termination resistors. Termination modules are located at either end of the bus network. As network messages are broadcast in
the form of voltage signals, the network voltage signals are stabilized by the termination resistors. Each termination module has a 120 ohm resistor
across the positive and negative bus connection in the termination module. With 2 termination modules on each network and the 120 ohm resistors
located in a parallel circuit configuration, the total network impedance, or total resistance, is 60 ohms.
Network termination improves bus message reliability by:
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stabilizing bus voltage.
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eliminating electrical interference.
Gateway Module
The IC is the gateway module, translating HS-CAN to MS-CAN and vice versa. This information allows a message to be distributed throughout both
networks. The IC is the only module on this vehicle that has this ability.
