Wiring in oil temp + pressure sensor to analog

[peasant racing]

Will you guys help me confirm that I am doing this right? I’m confused about the ground hook ups…

Vehicle is a 2006 base RSX with the 02-04 type S k pro v4

I’ve done lot of research and wanted to make sure I understand the best way to wire in these sensors to the ECU so that they will be able to be data logged. My plan is based on the forums here and also the help guide on hondata

Sensors I’m using:

Oil temp sensor: delphi packard/aptiv
12160855

Oil pressure: Autex 150 psi transducer sensor
AUTEX 150 Psi Pressure Transducer/Sender/Sensor 150/200 Psi Stainless Steel 1/8”-27 NPT Pressure Transducer Sensor


My plan:

For the pressure sensor:

1.) tap into 12 volt ignition source from fuse panel, and run a 12volt to 5 volt converter. I’d rather do this then tap into ecu harness.

2.) run 5 volt to sensor, and signal out to analog 2.

3.) for Gnd will ground directly to body? Here is where I get confused, should I instead use the ground coming off the analog harness?

Temperature sensor: (it’s a two wire sensor)

1.) hook up Ground from analog harness and run to sensor

2.) hook up sensor output to analog 3.


Question:

Should I avoid used the analog grounds? Or is it best to used these to avoid “ground loops”


Does my wiring plan make sense? For the temp sensor I chose one that the analog instructions mentions I can hook up directly.

[peasant racing]

https://www.hondata.com/help/kmanager/i ... rature.htm

I wanted to clarify also if I need to hook up the resistor? The language in the tutorial is a little confusing. It doesn’t make it clear whether I need a resistor added if I have one of the listed sensors. See below, first it says certain temp sensors may be directly connected, ok great… but then it says “ a pull up resistor must be used so the KPro can measure the sensor resistance.”

So which is it? Can I hook directly up do I need the “pull up resistor”

And for the signal ground, am I able to use the analog ground? I would really prefer it if I could avoid doing a tap elsewhere.




“Certain temperature sensors may be connected directly to the KPro analog inputs. Temperature sensors contain a negative temperature coefficient (NTC) resistor, and decrease in resistance with increasing temperature. Because the NTC resistor does not provide a voltage output, a pull up resistor must be used so the KPro can measure the sensor resistance.

Temperature sensors have non linear resistance to temperature and cannot use a straight voltage to temperature conversion table. Conversions for common sensors are built into KManager using Steinhart-Hart co-efficients.

Supported Sensors
• Delphi 25036751 (air temperature)
• Delphi TS10075 (coolant temperature)
• Bosch 0280130039 (air temperature)
• Bosch 0280130026 (coolant temperature)
• Delphi 12160855 / AEM 30-2012 (fluid temperature)

Other Delphi and Bosch part numbers may have the same output characteristics are the above sensors.

Wiring
A 1.5k ohm (1500 ohm) 1% resistor must be used between the analog input and 5V. The 5V source can be any of the ECU VCC outputs. The sensor can be grounded to any ECU signal ground (SG3 in the picture).

[Hondata]

first it says certain temp sensors may be directly connected, ok great… but then it says “ a pull up resistor must be used so the KPro can measure the sensor resistance.”
So which is it? Can I hook directly up do I need the “pull up resistor”

Both are true. The sensor can be directly connected and you need to use a pull up resistor. As per the diagram on that page.