No vehicle speed output - v3 GC8

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dr_jones
Posts: 162
Joined: Wed Jun 08, 2016 2:24 pm

No vehicle speed output - v3 GC8

Post by dr_jones »

Hi - I wonder if anyone else has had this issue - I've been trying to get my vehicle speed input working on a S6plus - however I don't seem to have any output at all from the speedo.

Having rung through the wiring and tested the input (AN05) is connected and configured correctly I'v confident that side is operational.

I'm starting to doubt that the speedo is actually outputting a signal at all - mine's the type with some sort of sensor on the (cable driven) speedo itself - the connection is marked 'RSW' on the back of the instrument cluster.

The attached file illustrates what I'm seeing on AN05 - looks like nothing more that noise to me.

Edit - I'm thinking RSW will mean "Reed SWitch" - and that that switch should open and close once per revolution - maybe I've got my inputs set up incorrectly....
Attachments
2017-08-17 15-34-58 plus 0h00m00s S6#1628.SD
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dr_jones
Posts: 162
Joined: Wed Jun 08, 2016 2:24 pm

Re: No vehicle speed output - v3 GC8

Post by dr_jones »

Cracked it - wrong input type - needed to be thermistor:

For the record:

config: RADAR = Thermocouple
filters: RADAR = On
teeth: RADAR = 3 (gives a very slightly high kph reading)
tyre size: 1.895

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