PT Cruiser L4-2.4L Turbo VIN 8 (2005)
Information Bus: Description and Operation
PCI Bus Description and Operation
The Programmable Communication Interface or PCI Bus is a single wire multiplexed network capable of supporting binary encoded messages shared
between multiple modules. The PCI bus circuit is identified as D25 and is violet with a yellow tracer. The modules are wired in parallel. Connections are
made in the harness using splices. The following modules are used on the PT:
-
Airbag Control Module
-
Amplifier
-
Antilock Brake Module
-
Compass/Temperature Mirror Module
-
Powertrain Control Module (Gas only)
-
Engine Control Module (Diesel only)
-
Remote Keyless Entry Module
-
Sentry Key Immobilizer Module
-
Radio
-
Mechanical Instrument Cluster
-
Hands Free Module (if equipped)
-
Satellite Radio Receiver (if equipped)
-
Window Regulator Modules (PT27) - Driver and passenger
Each module provides its own bias and termination in order to transmit and receive messages. The bus voltage is at zero volts when no modules are