Scania TMS DTC 687 Unexpected cable harness for CAN bus detected

TMS Transmission Management System · Scania

Code 687 (decimal). Some diagnostic tools show it in hexadecimal as 02AF.

In short

The GMS control unit indicates that the safety bus's cable harness is connected to the vehicle, but the software is not configured for this.

Applies to: TMS3 (TMS)TMS6 (TMS)

What does Scania TMS fault code 687 mean?

What causes Scania DTC 687?

How does the system react?

What are the symptoms?

How to fix Scania TMS fault code 687?

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

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