Service Information

Orlando

Data Link References

This table identifies which serial data link that a particular control module uses for in-vehicle data transmission. Some control modules may use more than one data link to communicate. Some control modules may have multiple communication circuits passing through them without actively communicating on that data link. This table is used to assist in correcting a communication malfunction. Not all control modules listed will be applicable to all vehicles. Refer to the schematics to determine which control modules apply. For the description and operation of these serial data communication circuits refer to Data Link Communications Description and Operation .

Control Module

Data Link Type

Diagnostic Procedure

Schematic Reference: Data Communication Schematics

Body Control Module

•	High Speed GMLAN

•	Low Speed GMLAN

•	Local Interconnect Network (LIN)

•	Scan Tool Does Not Communicate with High Speed GMLAN Device

•	Scan Tool Does Not Communicate with Low Speed GMLAN Device

•	DTC U1500-U15BF

Electronic Brake Control Module

•	High Speed GMLAN

•	Chassis High Speed GMLAN

•	Scan Tool Does Not Communicate with High Speed GMLAN Device

•	Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device

Engine Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Front and Rear Parking Assist Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

HVAC Control Module

•	Low Speed GMLAN

•	Local Interconnect Network (LIN)

•	Scan Tool Does Not Communicate with Low Speed GMLAN Device

•	DTC U1500-U15BF

HVAC Controls

Local Interconnect Network (LIN)

DTC U1500-U15BF

Inflatable Restraint Sensing and Diagnostic Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Info Display Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Instrument Cluster

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Multi-axis Acceleration Sensor

Chassis High Speed GMLAN

Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device

Multimedia Player Interface Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Power Steering Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Radio

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Radio Controls

Local Interconnect Network (LIN)

DTC U1500-U15BF

Rain Sensor

Local Interconnect Network (LIN)

DTC U1500-U15BF

Seat Heating Control Module

Low Speed GMLAN

Scan Tool Does Not Communicate with Low Speed GMLAN Device

Steering Wheel Angle Sensor

Chassis High Speed GMLAN

Scan Tool Does Not Communicate with Chassis High Speed GMLAN Device

Sunroof Control Module

Local Interconnect Network (LIN)

DTC U1500-U15BF

Transmission Control Module

High Speed GMLAN

Scan Tool Does Not Communicate with High Speed GMLAN Device

Window Motor - Driver

Local Interconnect Network (LIN)

DTC U1500-U15BF

Window Switch - Driver

Local Interconnect Network (LIN)

DTC U1500-U15BF

Window Switch - Left Rear

Local Interconnect Network (LIN)

DTC U1500-U15BF

Window Switch - Passenger

Local Interconnect Network (LIN)

DTC U1500-U15BF

Window Switch - Right Rear

Local Interconnect Network (LIN)

DTC U1500-U15BF