Principles of Operation

Configurable modules accommodate a variety of vehicle options, eliminating the need for many unique modules for one vehicle line. These modules must be configured when replaced as part of a repair procedure. Configurable modules should not be exchanged between vehicles since the settings are unique to each vehicle. Failure to configure a new module may result in incorrect operation and/or DTCs setting.

The following are the 3 different methods of configuration:

Programmable Module Installation(PMI)
Module reprogramming ("flashing")
Programmable parameters

Some modules do not support all 3 methods.

Definition of Terms

The following are definitions of configuration terms:

Programmable Module Installation(PMI)

PMI is a scan tool process which configures settings in a new module. Data used for the PMI process is automatically downloaded from the original module and stored when a scan tool session is started. If this data cannot be retrieved from the module being replaced, the scan tool may prompt for As-Built data entry or display a list of parameter values that need to be manually selected. Some modules are reprogrammed during PMI when a strategy/calibration update is available. To carry out PMI, refer to Programmable Module Installation (PMI) .

NOTE: It is important that the scan tool identifies the vehicle and obtains configuration data prior to removing any modules. The new module must be able to communicate with the scan tool in order to carry out PMI.

Module Reprogramming

Module reprogramming (also referred to as "flashing") is a scan tool process which updates the strategy/calibration in a module. Reprogramming a module with the same level of software will not improve module operation or repair a hardware failure. Module reprogramming is automatically carried out during PMI when a later strategy/calibration is available.

NOTE: Module reprogramming should be limited to circumstances where a published TSB procedure recommends doing so.

NOTE: A module cannot communicate with other modules on the communication network while being reprogrammed. Clear any network communication DTCs which may have been set in other modules during the reprogramming process.

NOTE: Some modules are reprogrammed in coordination with other modules. Follow the Integrated Diagnostic System(IDS) key cycling instructions carefully to avoid reprogramming errors, including failure of programming one or more of the modules.

Accessory Protocol Interface Module(APIM) Programming

Accessory Protocol Interface Module(APIM) programming is a process that updates the APIM Consumer Interface Processor(CIP) and Vehicle Interface Processor(VIP) software. The VIP programming updates the calibration files in the portion of the APIM which interfaces with the Controller Area Network(CAN). The CIP programming updates calibration files in the portion of the APIM that interfaces with mobile phones and other customer devices.

APIM programming uses the Vehicle Communication Module(VCM) to read and program the VIP software through the Data Link Connector(DLC). A web-based On-Line Automotive Service Information System(OASIS) application is used to read and program the CIP software via a Universal Serial Bus(USB) cable between the scan tool USB port and vehicle USB cable. Both the VCM and Universal Serial Bus(USB) cable must remain connected, and OASIS application must be running on the scan tool during APIM programming. Carry out APIM programming. Refer to the appropriate Information and Entertainment Systems article for the procedure.

Programmable Parameters

Programmable parameters are customer preference items that may be modified by the dealer via the scan tool or in some cases, modified by the customer following a procedure listed in the Owner's Literature. While many configuration options may exist for a module, only a few of these options are programmable parameters.

Adaptive Learning and Calibration

Some modules require a separate learning procedure be carried out if replaced as part of a repair procedure. For adaptive learning and calibration instructions, refer to the specific module removal and installation procedures.

Vehicle Identification(VID) Block

Some PCMs contain a memory area called a Vehicle Identification(VID) block. The PCM VID block commonly stores powertrain configuration items such as Vehicle Identification Number(VIN), tire size, axle ratio, and whether or not the vehicle is equipped with cruise control.

Module Address

A unique module address is assigned to each module on the network for identification.

As-Built Data

As-Built data is a VIN -specific module configuration record. During vehicle build, the configuration from all modules is downloaded and stored in the As-Built database. As-Built data will not reflect customer preference items that have been changed from the default state. These items need to be changed using programmable parameters after the module is configured.

NOTE: It is not necessary to obtain As-Built data unless directed to do so by the scan tool. This data may be accessed from the technician service publication website.

Module Configuration and Parameter Chart

Module	Module Address	Requires PMI	Reprogram/ Flash Capable	Requires Adaptive Learning or Calibration	Available Programmable Parameters
ABS module	760	Yes	Yes (with RSC®)	Yes	Front/rear tone rings Interactive vehicle dynamics initialization TBC module
Accessory Protocol Interface Module(APIM)	7D0	Yes	Yes	No	Stereo in pass-through
Audio Digital Signal Processing(DSP) module	78B	Yes	Yes	No	None
Audio Front Control Module(ACM)	727	Yes	Yes	No	Clock display (without navigation ACM) PAM (with navigation ACM)
Auxiliary Heater Control Module(AHCM)	7E3	No	No	No	None
Body Control Module(BCM)	726	Yes	Yes	Yes	2- or 4-door configuration Ambient light sensor Autolamps Axle ratio Cruise control Daytime running lamps Fog lamps Front turn lamp outage configuration Police dark car feature Smart unlocking Stop and tail lamp outage configuration Rear turn lamp outage configuration Tire placard pressure Tire size
Circuit Deactivation Ignition Module(CDIM)	7EA	No	Yes	No	None
Dual Climate Controlled Seat Module(DCSM)	776	Yes	Yes	No	None
Driver Seat Module(DSM)	744	Yes	Yes	No	None
Front Controls Interface Module(FCIM)	7AF	No	No	No	None
Global Positioning System Module(GPSM)	709	Yes	Yes	No	None
HVAC module	733	Yes	Yes	No	None
Heated Steering Wheel Module(HSWM)	714	Yes	Yes	No	None
Instrument Panel Cluster(IPC)	720	Yes	Yes	No	Autolock Autounlock Number of fuel senders Number of fuel tanks Engish/Metric units Gallon type Metric display type Language Engine hours Engine idle hours Welcome/farewell strategy TBC Tank size Speedometer bias Belt-Minder®
Parking Aid Module(PAM)	73E	No	Yes	No	None
PCM	7E8	Yes	Yes	Yes	None
Restraints Control Module(RCM)	737	Yes	Yes	No	Driver seat Belt-Minder®
Steering Column Control Module(SCCM)	72C	Yes	Yes	No	Courtesy wipe LH steering wheel switch configuration
Trailer Brake Control(TBC) module	757	No	No	No	None
Trailer Module (TRM)	78B	Yes	Yes	No	None
Transfer Case Control Module(TCCM)	761	No	Yes	No	None
Transmission Control Module(TCM)	7E9	No	Yes	No	None
Tire Pressure Monitor(TPM) module (also known as Radio Transceiver Module [RTM])	759	No	Yes	No	None