Wiring Bosch 0261230340 - Pressure / Temp Combo

ADU
1

Hi,
I have a ADU 7 - NO ECU ! !
I try to do Anlaog Input for the Bosch 0261230340. (Pressure / Temp Combo)

Sensor Pin 2 to ADU Pin 16 (Input Analog 3 - NTC)
Sensor Pin 3 to ADU Pin 10 (+5v)
Sensor Pin 4 to ADU Pin 9 (Ground)
Sensor Pin 5 to ADU Pin 15 ( Input Analog 5 - Pressure)

Between NTC Pin 2 and Pin 3 from Sensor is a 330 Ohm Pullup.
Is it correct that the Sensor also need +5v on Pin 10 ? (For Pressure) ?
The Wiring Diagrams for only Temp Sensors don`t show this pinning.

P.s.
Pressure Works. Oil Temp dont works correctly.
How can i Save the Setup from Temp in Wizard, if i Change the Pullup to 330 ?
Everytime i open this again, he show me the first Standard Temp Sensor with 2000 Ohm.

Thank you and
Greets Ago

2

To get pressure sensor work it has to be powered, so you need to connect +5V to that sensor.

What do you mean by “does not work correctly”?

There is no option to save the wizard settings. The purpose of the wizard is to get values from the user and calculate the correct table values based on that input.

3

Thats my actually wiring. I also use the wizzard for 330 ohm. My friend Show me also the calculation from his Emu.

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4

But what is the issue here? You wrote that the pressure sensor works fine, but the temperature sensor does not.
Does it not work at all, or do its readings seem to be incorrect?

5

Readings Seems incorrect.

I will do another try today and will Let you know Details.

Stresful Day Yesterday, so i cant remember Details.

But i remember when i log Analog input from temp sensor. The voltage Shows me 0,41 - 0.42. Car was in idle and warms up. Voltage dont react.

6

The wiring diagrams seem to be fine. Have you checked whether the temperature sensor is not faulty?
You can also send me your ADU project(here or via e-mail: maciej.fudala@ecumaster.com), and I will take a look.
But first, please check if the sensor itself is not damaged.

1 Like
7

I orderd a New one.

Hopefully tomorrow i can double check it.

I will Let you know.

Yesterday i checked the voltage again with adu Log

0.37 - 0.41 input. This dont change in car warmup.

Pressure sensor Works fine.

I also change the analog input in adu. Doesnt change anything.

Greets nd thank You :slight_smile: