Data is provided to the instrument cluster from other subsystem modules in the form of controller area network (CAN) messages. The instrument cluster identifies the signals and displays the appropriate message in the message center. Most messages are accompanied by a chime or series of chimes which are requested by the module generating the message. The driver can view system status messages which are current within the instrument cluster software by pressing and holding the trip reset button for more than three seconds, the information display will then display the current messages in priority order. For more information, refer to the relevant workshop manual section.
If a new instrument cluster is to be installed, the instrument cluster renewal procedure must be carried out using the approved diagnostic system. This will ensure that the CCF data is correctly transferred from the central junction box (CJB) to the replacement cluster. The CCF will also need to be updated using the approved diagnostic system if the vehicle is modified in service from its original factory specification. This can include the fitting of non-standard wheels and/or tires and optional accessory dealer install components with an electrical interface, such as park distance control.
The CCF contains all relevant data about the specification and market condition of the applicable vehicle, immobilization codes and driver personal settings. This information is retained in the CJB, the engine control module (ECM) and the instrument cluster enabling each system module to detect which systems and components are installed to the vehicle. The information is continuously transferred between these three system modules to ensure that the data is constantly backed-up between the modules.
Visual inspection
| Electrical |
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Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).
| DTC | Description | Possible cause(s) | Action |
|---|---|---|---|
| B1A0016 | Control Module |
| Check the battery condition and state of charge. Refer to the relevant section of the workshop manual. Check the module power and ground circuits. Refer to the electrical guides. |
| B1A0017 | Control Module |
| Check the battery condition and state of charge. Refer to the relevant section of the workshop manual. Check the module power and ground circuits. Refer to the electrical guides. |
| B1A0046 | Control module |
| Configure the module using the approved diagnostic system. Refer to the warranty policy and procedures manual if a module is suspect. |
| B1A0048 | Control module |
| Configure the module using the approved diagnostic system. Refer to the warranty policy and procedures manual if a module is suspect. |
| B1A004B | Control module |
| Consider the atmospheric conditions before condemning a module. Clear the DTC and retest. Refer to the warranty policy and procedures manual if a module is suspect. |
| B1A1496 | RCM Warning Lamp |
| Check the warning lamp function. Check the circuits between the RCM and the instrument cluster. Refer to the electrical guides. |
| B1A7592 | Fuel Sender No.1 |
| Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| B1A7692 | Fuel Sender No.2 |
| Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| B1A7864 | Front Fog Lamp |
| Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| B1A7964 | Rear Fog Lamp |
| Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| B1A8064 | Oil Pressure |
| Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| B1A8164 | Internal Trip Switch |
| Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| B1A8264 | External Trip Switch |
| Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| B1A8446 | Car Configuration Data |
| Configure the module using the approved diagnostic system. Refer to the warranty policy and procedures manual if a module is suspect. |
| B1A8664 | Ignition status |
| Check the ignition status. Check for ignition related DTCs. |
| B1A8768 | Battery Disconnection / ECU Reset |
| Check if the vehicle has been jump-started. Check the battery condition and state of charge. Refer to the relevant section in the workshop manual. |
| B1A8849 | System timer |
| Refer to the warranty policy and procedures manual if a module is suspect. |
| U000187 | High Speed CAN Communication Bus |
| Refer to the Network Communications section of the workshop manual. |
| U000188 | High Speed CAN Communication Bus |
| Refer to the Network Communications section of the workshop manual. |
| U001087 | Medium Speed CAN Communication Bus |
| Refer to the Network Communications section of the workshop manual. |
| U001088 | Medium Speed CAN Communication Bus |
| Refer to the Network Communications section of the workshop manual. |
| U010087 | Lost Communication With ECM/PCM "A" |
| Refer to the Network Communications section of the workshop manual. |
| U010187 | Lost Communication with TCM |
| Refer to the Network Communications section of the workshop manual. |
| U010287 | Lost Communication with Transfer Case Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U010487 | Lost Communication With Cruise Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U012287 | Lost Communication With Vehicle Dynamics Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U012687 | Lost Communication With Steering Angle Sensor Module |
| Refer to the Network Communications section of the workshop manual. |
| U012787 | Lost Communication With Tire Pressure Monitor Module |
| Refer to the Network Communications section of the workshop manual. |
| U012887 | Lost Communication With Park Brake Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U013287 | Lost Communication With Suspension Control Module "A" |
| Refer to the Network Communications section of the workshop manual. |
| U013387 | Lost Communication With Active Roll Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U013687 | Lost Communication With Differential Control Module - Rear |
| Refer to the Network Communications section of the workshop manual. |
| U013887 | Lost Communication with All Terrain Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U014087 | Lost Communication With Body Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U015187 | Lost Communication With Restraints Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U015987 | Lost Communication With Parking Assist Control Module "A" |
| Refer to the Network Communications section of the workshop manual. |
| U016487 | Lost Communication With HVAC Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U016687 | Lost Communication With Auxiliary Heater Control Module |
| Refer to the Network Communications section of the workshop manual. |
| U018287 | Lost Communication With Lighting Control Module - Front |
| Refer to the Network Communications section of the workshop manual. |
| U018487 | Lost Communication With Radio |
| Refer to the Network Communications section of the workshop manual. |