PWM Signals in Automotive Applications

Hello.
I've been working on a Touareg lately. Now, I want to take a look at the air suspension system, but before I start, I'd like to gather some information first. Does anyone have an idea what the PWM signals look like? What voltage levels do they have, and what current flows through them?
Sure, here's the translation:

'Best regards.'

Das PWM im Auto wird zwischen 0 und 12 (14) Volt liegen.
Aussehen tu so ein Signal mit ein Rechteck, welches die breite ändert.
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Hello Maxx.
Thank you very much... hehe. But I know what PWM is and how it works, right?

I need more detailed information. I understood that 0-12 was the range, although I find 12V to be a bit high.

For example, the oil level sensor is often a PWM signal. But what are the voltage levels and current like?

I need to see if I can measure that somewhere.

To measure this effectively, you need a digital storage oscilloscope.

I was wondering why you want to know what PWM is .
As far as I know, even with PWM control in a car, the system still uses 12 volts.
Whether it's related to lights controlled by the body control module or something else.
I can't say that with 100% certainty, of course.

@benmar
ja genau das ist mein prob. hab nur ein altes Schul Oszi hier.
Werd ich nochmal investieren müssen.
P.S.: Do you have any experience with computer-based oscilloscopes, specifically regarding software? Are they worth it? And are they suitable for use in the CAN bus area?
Sure, here's the translation:

'Best regards.'

@Maxx
12V meinste echt? ok. muß ich wohl echt mal zusehen.
thank youe'Thank you.'

Habe mal ein wenig damit rumgespielt, gute sind allerdings wie so oft sehr teuer.
Du musst eigentlich nur darauf achten, dass die Abtastrate entsprechend hoch genug ist (Muss doppelt so hoch sein als die maximale Frequenz die du messen willst) und dass das Funktionsumfang für dich geiegnet ist.
How do you mean in the CAN area? Do you want to measure the CAN bus on the oscilloscope??How do you mean in the CAN area? Do you want to measure the CAN bus with the oscilloscope?

@benmar
Ja, wenn ich mir ein Oszi hole, dann gleich ein richtiges, womit ich auch 1Mbit CAN-Bus darstellen kann.

Aber mal zurück zum Thema.
12V level, with a fluctuating 12V power supply? I find that strange; are you sure that's possible?

Thanks.e'A 12V level with a fluctuating 12V power supply? I would find that strange; are you sure that's possible?''Thank you.'