How to Test Audi A4 Cooling Fan
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- เผยแพร่เมื่อ 5 ก.ย. 2024
- Video describes How to Test Audi A4 Cooling Fan in an easy way. See how to bypass the ECM during testing.
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When I replace the fan control module with an OEM used module does the new one need to be programed? 2006 Audi A4 Conv 1.8T FWD.
No
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Thanks for sharing ADP👍
Can the motronic module be tested using a power probe?
What dtc's are set by a faulty module on vw's & audi?
Not Power Probe. PP is for electrical work only, not electronics.
Well, DTCs are many and change from year to year.
You didn't test this control circuit. Also, what level of PWM voltage does the ECM deliver to the fan control module? 5 VDC or 12 VDC? Also, since the manufacturer does not specify the voltage and detailed operation, does the ECM actually deliver the PWM control voltage to the fan control module or does the fan control module deliver a Vref to the ECM and the ECM toggles the voltage on off ground to create the digital PWM signal? Thank you. Have a blessed and safe week to you and your family.
Wow, I love those questions. You are a smart man. Such a video would require an electronics course as well, which I already have here on this channel ADPTraining.
Now, almost all these units toggle between 0.00 and 5.00 volts. No, the fan module has no idea of how much to ground the ECM, if it worked like you said. So the entire signal is processed at the ECM. What I didn't explained is that the module looks at either the ground side or the 5 volt side. So which side is the ECM looking at? That would require more testing. Thanks.
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Good morning, my name is Richard and I have the same audi a4 1. 8t b7 with the same problem, but if I switch the ignition on, the fan stops for a while, when the engin is of and cold, the fan start running without stopping. How do I fix that problem. Please
Fan controller possibility, ECM second
2006 audi a4 cooling fan now working
let see how to deal with it engine fan on but ac fan not woking vehical is over heating
Check the fan module.
Replaced a lot of those it’s a misterious little box
VW used a strange thinking. They put LOGIC inside these boxes. They do that with a bunch of others relays too. Like the fuel pump relay that also has a crank sensor input to sense when engine is turning.