Variant 1
Applies to: COO10 (COO)
What does Scania COO fault code 889 mean?
The control unit interprets that the switch module is misconfigured. The chassis serial number in the control unit and switch module differ.
What causes Scania DTC 889?
- As a spare part, the switch module is not configured or has been taken from another vehicle. - As a spare part, the control unit is not configured or has been taken from another vehicle.
How does the system react?
Red warning indication of a coordinator fault is displayed.
What are the symptoms?
Operational data cannot be saved as long as the fault code is active.
How to fix Scania COO fault code 889?
- Check that the coordinator has undergone spare parts programming.
- Start the Configuration of switch modules wizard and action switch module faults.
- Switch modules with faults are marked in red and a symbol in the switch module configuration tool.
Variant 2: Switch module, configuration error
Applies to: COO11 (COO)
Detection
The control unit interprets that the switch module is misconfigured. The chassis serial number in the control unit and switch module differ.
Possible cause
- The switch module is not configured. - The switch module has been taken from another vehicle. - The coordinator is not configured. - The coordinator has been taken from another vehicle.
Symptoms
Operational data cannot be saved as long as the fault code is active.
How to fix
- Check that the coordinator has undergone spare part programming.
- Start the Configuration of switch modules wizard and action switch module faults.
- Switch modules with faults are marked in red and a symbol in the switch module configuration tool.
Variant 3
Applies to: COO8 (COO)
Detection
The control unit interprets the switch module to be incorrectly configured. The chassis serial number in the control unit and switch module differ.
Possible cause
- As a spare part, the switch module is not configured or has been taken from another vehicle. - As a spare part, the control unit is not configured or has been taken from another vehicle.
Symptoms
The operational data cannot be saved as long as the fault code is active.
How to fix
- Check that the coordinator has undergone spare parts programming.
- Start the Configuration of switch modules wizard and action switch module faults.
- Switch modules with faults are marked in red and a symbol in the switch module configuration tool.
Variant 4
Applies to: COO9 (COO)
Detection
The control unit interprets the switch module to be incorrectly configured. The chassis serial number in the control unit and switch module differ.
Possible cause
The cause can be one of the following: - The switch module as a part is not configured or has been moved from another vehicle. - The control unit as a part is not configured or has been moved from another vehicle.
Symptoms
The operational data cannot be saved as long as the fault code is active.
How to fix
- Check that the coordinator has undergone spare parts programming.
- Start the Configuration of switch modules wizard and action switch module faults.
- Switch modules with faults are marked in red and a symbol in the switch module configuration tool.
Variant 5
Applies to: COO8
Detection
The control unit interprets the switch module to be incorrectly configured. The chassis serial number in the control unit and switch module differ.
Possible cause
The cause can be one of the following: - The switch module as a part is not configured or has been moved from another vehicle. - The control unit as a part is not configured or has been moved from another vehicle.
System reaction
A warning is displayed in the instrument cluster. Operational data cannot be saved as long as the fault code is active.
How to fix
- Check that the coordinator has undergone spare parts programming.
- Start the Configuration of switch modules wizard and action switch module faults.
- Switch modules with faults are marked in red and a symbol in the switch module configuration tool.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.