Can't get speedometer working after accident

[lccb1100a_imp]

could it be a "limp mode" or something like that with the ECU???

It goes into limp mode because the speedo isn't turning. That's not the problem. The problem is why the speedo isn't turning.

Both the meter and ecu get a signal from one wire coming out of the abs unit. I think its pink and blue. If no signal or bad signal you'll go into limp mode. Check for continuity this wire.

The mechanic is saying this signal is good. He's baffled.