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Got a MIL for : 17704 - Error in Mapped Cooling System (check Temp-Sensor and Thermostat)

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Old 01-03-2008, 02:25 PM
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Default Got a MIL for : 17704 - Error in Mapped Cooling System (check Temp-Sensor and Thermostat)
I have read a bit about it, looks like this error will pop-up when one of the temp sensors or thermostat reports a value thats outa-wack...

Any tips on how to view what the Temp-Sensors and/or Thermostat are reporting via Vag Com?

TIA

P.S.
I have a Bently at home, have not had a chance to consult it yet...
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Old 01-03-2008, 05:02 PM
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Our thermostat is mechanical. Group 001 field 2 is the coolant temperature.
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Old 01-03-2008, 05:59 PM
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Default how does the thermostat throw this code then? and thank you...
if the thermostat is mechanical why does the computer think it may not be working correctly?
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Old 01-03-2008, 06:01 PM
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also, is the thermostat likely at fault if my dash temp guage seems to be reading correctly?
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Old 01-03-2008, 06:41 PM
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ECU threw this code because it got an abnormal coolant temperature from the CT sensor.
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Old 01-03-2008, 06:46 PM
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Default If the display of the dash temp gauge looks normal, the CT sensor should be bad. Our CT sensor has 2
output signal, one to ECU and one to instrument cluster.
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Old 01-04-2008, 07:41 AM
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Replace engine coolant temperature sensor. Green top under pipe from airbox to y-pipe, end of story.
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