Both wires show 4.x volts. Grounding to chassis. Any idea why? I've seen the voltage fluctuating also like a PWM signal or something
2009 E93 ADE Single Turbo Build
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Both wires show 4.x volts. Grounding to chassis. Any idea why? I've seen the voltage fluctuating also like a PWM signal or something
We have an E93 in the family. I'm gonna take a look at it and see if we can sort this out.
Unfortunately we have an E93 335is in the stable now, too (one more car to maintain, currently getting a cooling system in my garage) ... let me know if I can help with anything.
Filippo
Ok... I have same color code.
I am measuring what I expected to see. Battery voltage on the red/white when engine is running.
I think you need to change your ground connection. Where you are clipped is a painted surface.
I am measuring what I expected to see. Battery voltage on the red/white when engine is running.
I think you need to change your ground connection. Where you are clipped is a painted surface.
I've already tried direct to the battery and with the car on. I've had my tables tinkered with, would any of the cold start changes affect the voltage here?
The same fuse runs the ebox fan, muffler flap and fuel tank leak diag and is located in the ebox it looks like.
Maybe measure one of those to try and confirm correct voltage on that circuit?
Maybe measure one of those to try and confirm correct voltage on that circuit?
Ahh, you may be right on the fuse.
So:
K6304a - Secondary Air Pump Relay
Y8616 - I don't know what this is(you said ebox fan?), but looking it up for other cars it says RPM sensor for transmission main shaft
IO1215 - Nitrogen oxide sensor (O2 Sensor)
M119a - Diagnostic Module for Tank Leaks (DMTL)
Y198 - Exhaust Gas-flap
I hate that you have torn into your car for all this. And now that we bring up the O2 sensor, Robert from Precision actually had mentioned this to me the other day, my O2 sensor codes(2CA7, 2CAB) I got may be related. I'll test it and let you know. I really appreciate the effort, I owe you one if this can solve the problem
Crisis averted!
Good thing I called in the big guns to solve this case... Jokes aside, I did not expect there to be a fuse problem while voltage was showing, shows you what I know!
Also, a photo of my painted ground point holding up like a champ:
Good thing I called in the big guns to solve this case... Jokes aside, I did not expect there to be a fuse problem while voltage was showing, shows you what I know!
Also, a photo of my painted ground point holding up like a champ:
Is a power signal strange in my case with a blown fuse? I'm trying to understand how power can be going there without it. So if you pulled your fuse, you'd get 4.x instead of 12/14?
Yours is much more fancy
It doesn't make much sense with the blown fuse. Perhaps something else is wrong with that circuit that caused the fuse to blow to begin with.
Maybe some corrosion into another circuit Supplying a bit of current/voltage?
lol ... yeah ... I got sick of screwing myself by not having fuses. Really like those Harbor Freight rubber seal boxes... come in 3 sizes
Filippo
