Data Link References
WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
This table identifies which serial data link that a particular device uses for in-vehicle data transmission. Some devices may use more than one data link to communicate. Some devices 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 devices listed will be applicable to all vehicles. Refer to the schematics to determine which devices apply. For the description and operation of these serial data communication circuits, refer to Data Link Communications Description and Operation .
Schematic Reference: Data Communication Schematics
Reference Information
| Code | Device | Data Link Type | Diagnostic Procedure |
|---|---|---|---|
| A11 | Radio |
|
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| A22 | Radio Control | CAN 5 | Scan Tool Does Not Communicate with Device on CAN 5 |
| A26 | Heater and Air Conditioning User Interface Control - Front | CAN 5 | Scan Tool Does Not Communicate with Device on CAN 5 |
| A103 | Roof Console | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| B75 | Mass Airflow Sensor | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| B75D | Mass Airflow Sensor - Bank 1 | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| B75E | Mass Airflow Sensor - Bank 2 | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| B108E | Ambient Air Quality Sensor - Exterior | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| B110 | Battery Monitor Module | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| B117A | Windshield Outside Moisture/Ambient Light and Humidity Sensor | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| B160 | Inside Air Moisture and Windshield Temperature Sensor | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| B165 | Content Theft Deterrent Sensor | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| B174W | Front View Camera - Windshield |
|
|
| B218L | Side Obstacle Detection Control Module - Left | CAN 4 | Scan Tool Does Not Communicate with Device on CAN 4 |
| B218R | Side Obstacle Detection Control Module - Right | CAN 4 | Scan Tool Does Not Communicate with Device on CAN 4 |
| B233B | Forward Range Radar Sensor - Long Range | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 |
| B233LF | Short Range Radar Sensor - Left Front | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 |
| B233R | Short Range Radar Rear Sensor | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 |
| B233RF | Short Range Radar Sensor - Right Front | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 |
| B233SL | Short Range Radar Rear Side Sensor - Left | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 |
| B233SR | Short Range Radar Rear Side Sensor - Right | CAN 8 | Scan Tool Does Not Communicate with Device on CAN 8 |
| G10 | Cooling Fan Motor | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| G58 | Evaporative Emission Canister Purge Pump | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| G59 | Engine Coolant Pump | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| K9 | Body Control Module |
|
|
| K19 | Suspension Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K20 | Engine Control Module |
|
|
| K29FV | Front Seat Heater Vent Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| K32 | Heated Steering Wheel Module | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| K36 | Restraints Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K40D | Driver Seat Adjuster Memory Module |
|
|
| K40P | Passenger Seat Adjuster Memory Module |
|
|
| K43 | Power Steering Control Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K56 | Serial Data Gateway Module |
|
|
| K60 | Column Lock Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K61 | Sunroof Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| K69 | Transfer Case Control Module | CAN 3 | Scan Tool Does Not Communicate with Device on CAN 3 |
| K71 | Transmission Control Module |
|
|
| K73 | Telematic Control Module |
|
|
| K77 | Remote Function Actuator Module | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| K85P | Restraints Occupant Classification System Module - Passenger | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K99 | Steering Column Tilt Wheel and Telescope Control Module | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| K111 | Fuel Pump Power Control Module | Powertrain CAN | DTC U0076 |
| K124 | Image Processing Module |
|
|
| K134D | Front Seat Bolster Memory Module - Driver | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| K134P | Front Seat Bolster Memory Module - Passenger | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| K157 | Video Processing Module | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| K160 | Brake System Control Module |
|
|
| K161 | Vehicle Performance Data Recorder |
|
|
| K164 | Differential Control Module | CAN 2 | Scan Tool Does Not Communicate with Device on CAN 2 |
| K171 | Rear Closure Hands Free Module | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| K179 | Automated Driving Mapping Module |
|
|
| K180 | Driver Monitoring System Module | CAN 2 | Scan Tool Does Not Communicate with Device on CAN 2 |
| K180S | Driver Monitoring System Module - Steering Wheel | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| K182 | Parking Assist Control Module |
|
|
| K212 | Gear Shift Control Module |
|
|
| K219 | Lighting Control Module | CAN 2 | Scan Tool Does Not Communicate with Device on CAN 2 |
| M4P | Programmable Air Inlet Valve Actuator | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M6PL | Programmable Temperature Valve Actuator - Left | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M6PR | Programmable Temperature Valve Actuator - Right | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M10 | Charge Air Cooler Coolant Pump | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M37P | Programmable Mode Valve Actuator | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| M74D | Front Side Door Window Regulator Motor - Driver | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| M74LR | Rear Side Door Window Regulator Motor - Left | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| M74P | Front Side Door Window Regulator Motor - Passenger | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| M74RR | Rear Side Door Window Regulator Motor - Right | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| M75 | Windshield Wiper Motor | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| M96 | Active Grille Air Shutter Actuator | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| M101L | Front Seat Belt Retractor Motor - Left | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| M101R | Front Seat Belt Retractor Motor - Right | CAN 1 | Scan Tool Does Not Communicate with Device on CAN 1 |
| P16 | Instrument Panel Cluster Control Module |
|
|
| P25 | Content Theft Deterrent Alarm | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| P29 | Head-Up Display | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| Q97B | Engine Coolant Flow Control Valve - Block | Local Interconnect Network (LIN) | DTC U0600-U06FF |
| S26 | Hazard Warning Switch | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| S64D | Front Seat Adjuster Switch - Driver | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| S64P | Front Seat Adjuster Switch - Passenger | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| S70R | Radio Control Switch - Steering Wheel | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| S79D | Front Side Door Window Control Switch - Driver | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| S79P | Front Side Door Window Switch - Passenger | Local Interconnect Network (LIN) | DTC U0100-U02FF (Using Digital Multimeter) , or DTC U0100-U02FF (Using Network Communication Status) |
| S91 | Parking Brake Control Switch | Local Interconnect Network (LIN) | DTC U1100-U12FF |
| S165 | Infotainment Control Switch |
|
|
| T3 | Audio Amplifier |
|
|
| T19 | Multifunction Power Supply Converter | Powertrain CAN | DTC U0076 |
| T22 | Wireless Accessory Charging Module | CAN 5 | Scan Tool Does Not Communicate with Device on CAN 5 |
| V1 | Passenger Compartment Air Filter Module | Local Interconnect Network (LIN) | DTC U1100-U12FF |