Quote:
Originally Posted by jwakil
Today I was testing my WUR and wanted to make sure the heating element was working. I measure resistance of ~25 ohms across the WUR pins, but when I measure the voltage across the plug that connects to it, it basically read zero. Is it supposed to be 12V? I measured with car off and on, both times it was zero. The engine was hot though. Does the power not flow to the heater if engine is hot, or do I have some wiring problems?
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jwakil,
If I remember correctly, you mentioned before in your other post that the
FP runs when ignition switch is turned to
RUN (not start). If this is the case, the
AFS (air flow switch) could be disconnected or bad. Or the
FP is hot wired to get power @ RUN.
Check
pin #10 red/white wire @ (14-pin connector) in the engine bay. This is where the
FP, WUR, AAR, TV are all connected. All these, share a common terminal @ #30 (fuel pump relay).
Once the
FP is running, the
red/white wire @ 10 (14-pin connector) should have power too. So thus with the
WUR, AAR, and TV (thermovalve for some SC's).
In summary: When FP runs, the following are all energized (WUR, AAV & TV). Keep us posted.
Tony