Aviator 2WD V8-4.6L DOHC (2003)
Information Bus: Description and Operation
Communications Network
Description and Operation
COMMUNICATIONS NETWORK
Powertrain Control Module (PCM)
The PCM is located in the instrument panel on the right side behind the glove compartment. The PCM is on the SCP communication network. The
PCM controls the engine for better fuel economy, emissions control, failure mode detection and storage. Refer to Symptom Chart in Computers and
Control Systems for diagnosis and testing of the PCM.
Anti-Lock Brake/Traction Control (ABS/TC) Module or Stability Assist Module
The anti-lock brake system/traction control (ABS/TC) module or stability assist module are on the standard corporate protocol (SCP) communication
network. The ABS/TC module or stability assist module controls the brake pressure to the four wheels to keep the vehicle under control while braking.
Restraint Control Module (RCM)
The RCM is located under the center console towards the instrument panel. The RCM is on the ISO 9141 network. The RCM controls the deployment
of the air bags based on sensor input.
Dual Electronic Automatic Temperature Control (DEATC) Module
The DEATC module is located in the instrument panel below the radio. The DEATC module is on the SCP communication network. The DEATC
module controls automatic climate functions that maintain the vehicle interior temperature at a constant setting.
Instrument Cluster
The instrument cluster is located in the instrument panel above the steering column. The instrument cluster is on the SCP communication network. The
instrument cluster serves as a UBP gateway to communicate to other modules on the UBP communication network. The instrument cluster is also
called a hybrid electronic cluster (HEC). The instrument cluster displays a variety of information.
Tire Pressure Monitor Module
If equipped, the tire pressure monitor module is located behind the right side C-pillar trim. The tire pressure monitor module is on the SCP
communication network. The tire pressure monitor module uses one sensor mounted in each tire to sense low tire pressure. When low tire pressure is
sensed the module will send a warning to the driver.
Variable Assist Power Steering (VAPS) Module
The VAPS module is located behind the instrument panel behind the glove compartment. The VAPS module is on the SCP communication network.
The VAPS module controls and varies the power steering effort needed at different vehicle speeds.
Driver Seat Module (DSM)
The DSM is located under the driver seat. The DSM is on the UBP communication network. The DSM controls the positioning and programming of
the driver seat, pedals and both outside mirrors.
Vehicle Security Module
The vehicle security module is located behind the right rear quarter trim panel. The vehicle security module is on the UBP communication network.
The vehicle security module controls the keyless entry functions for the vehicle.
Driver Climate Controlled Seat Module
The driver climate controlled seat module is located under the driver seat. The driver climate controlled seat module is on the UBP communications
network. The driver climate controlled seat module controls the heating elements in the seat for passenger comfort. For additional driver climate
controlled seat module information, refer to Locks.
Passenger Climate Controlled Seat Module
The passenger climate controlled seat module is located under the passenger seat. The passenger climate controlled seat module is on the UBP
communications network. The passenger climate controlled seat module controls the heating elements in the seat for passenger comfort. For additional
passenger controlled seat module information, refer to Seats.
Parking Aid Module
The parking aid module is located in the right rear quarter trim panel towards the rear. The parking aid module is connected to the ISO 9141
communication module. The module controls sensors in the rear bumper that detect close objects when the vehicle is in reverse.
Four-Wheel Drive (4WD) Control Module
The 4WD control module is located in the center console towards the instrument panel. The 4WD control module is on the UBP communications
network. The 4WD control module engages and disengages the transfer case between 2WD and 4WD when more traction is required.
Navigation Module
