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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > E90 328 Throttle Pedal Wiring Diagram ?



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      07-09-2018, 09:45 PM   #1
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E90 328 Throttle Pedal Wiring Diagram ?

Does anyone have the wiring diagram for the foot throttle pedal?

It is 6 pin/wires. And when looking at the car side plug, numbered as-
1 2 3
4 5 6

pin 1- brown with yellow stripe
pin 2- brown
pin 3- yellow with green stripe
pin 4- white
pin 5- yellow
pin 6- white

So something should be- ground, 5v reference, signal (0-5v), IDK what else.

Any help? Thanks

My idea is to tap and monitor the 0-5v signal wire and I will then map out the throttle position voltage. I can use this voltage to turn on a switch/relay.

For example if half throttle is 2.5v, I can monitor the signal wire and when it goes above 2.5v, it turns on a relay, which would turn off when the signal voltage drops below 2.5v.
Or turn on Nitrous when pedal is beyond 80% position. Open an exhaust dump valve when above 50% throttle position. Open electric BOV when throttle position is below 15% and above 5%. The possibilities are endless.

I want to be able to turn on and off some things depending on throttle pedal position.
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      07-10-2018, 05:49 AM   #2
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      07-10-2018, 08:52 AM   #3
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Thanks.

Looks like there is basically 2 sensors. BMW redundancy.
Each has 3 wires- ground, 5v+, signal.

Maybe one is 0-5v and the other is 5v-0 sweep. I'll do some testing.
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      07-10-2018, 11:18 AM   #4
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one is 0-5v and the other is something like 2.8-0v (opposite directions).

Honestly wouldn't it be easier to just pull the TPS position from the CAN bus?
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      07-10-2018, 12:14 PM   #5
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Quote:
Originally Posted by hassmaschine View Post
Honestly wouldn't it be easier to just pull the TPS position from the CAN bus?
But then I would need a CAN bus interpreter of some sort.
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      07-10-2018, 02:23 PM   #6
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IIRC those are pretty easy to come by - I don't know off the top of my head, but I know the exist as it's a really common thing to do - better than reinventing the wheel, plus you could access other data (RPM, vehicle speed, etc).

BTW, I believe all PWG modules are the same from the E46 to at least the E9x.
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