N/a ecu

[David P]

Cruise control and active spoiler retrofit into N/A auto.

 

I have changed the dash loom for a TT model wired for active spoiler and cruise.

 

The column loom has been changed for a loom including cruise.

 

The engine loom included these functions and is unchanged.

 

Fitted the active spoiler, switch and ECU, cruise actuator, control stalk and ECU.

 

The spoiler 'down' function operates correctly, yet does not operate in 'auto' whilst car cruising.

 

The cruise ECU clicks when turned on, but the dash light does not come on, and cruise does not function.

 

Before I begin running through circuits, switches and ECU checks, I suspect that the main ECU may not include these functions.

 

Does anyone know if there are versions of engine/gearbox ECU, with and without these functions?

Edited May 20, 2010 by David P (see edit history)

[chrispot]

the cruise ecu is a complete system on its own. I don't know about the active spoiler i would assume that's the same, put the cruise into diagnostic mode and this will tell you what problems/area to start looking at, the active spoiler might have a diagnostic mode as well. hope this helps, regards chris.

[David P]

Chris,

 

Thank's for the input.

 

I didn't realise there was a diagnostic mode, better get stuck back into the manual.

 

I didn't change the instrument loom, and there were 4 wires more than in mine, assumed the were for slip control, ABS and/or airbags?

Yet the instrument loom only draws info for display.

 

Because both systems are not functioning, it points towards not receiving info from speed sensor.

 

When first tested after fitting the TT dash loom, I found that the wiper harness was wired to the left kick panel, and not the right as the previous loom.

 

Maybe there are other differences that I need to trace?