Which relay is for the auxillary (after-run) water pump?
03-02-2005, 09:59 AM
#3
Doesn't look like there's a relay...From the Bentley:.....>
After-run coolant pump -V51-, checking
Note:
After-run coolant pump -V51- is located on the fan cowl to the right of the radiator fan.
- Switch on ignition.
After-run coolant pump -V51- should start running (pump can be felt and heard).
If pump does not run:
Check fuse and wiring according to wiring diagram.
If the fuse is OK and there is no open circuit in the wiring:
Replace after-run coolant pump -V51-
Note:
After-run coolant pump -V51- is located on the fan cowl to the right of the radiator fan.
- Switch on ignition.
After-run coolant pump -V51- should start running (pump can be felt and heard).
If pump does not run:
Check fuse and wiring according to wiring diagram.
If the fuse is OK and there is no open circuit in the wiring:
Replace after-run coolant pump -V51-
03-02-2005, 10:13 AM
#5
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Yeah, the bentley instructions are stupid...
I've got steady 12V at the fuse box for the pump. But 0-12V at the pump connector, depending if the pump is running.
So there must be a relay or somekind of controller. Maybe it's the fan control...
So there must be a relay or somekind of controller. Maybe it's the fan control...
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03-02-2005, 11:29 AM
#8
stupid me...i have it online.
i was right, J293 controls the afterrun circuit in the TT.<ul><li><a href="http://www.modifieda4.com/web/archive/SSP%20207%20-%20Audi%20TT%20(english)%20(partial)%20(afterrun%2 0pages).pdf">link</a></li></ul>
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