Jump to content

N350X - Oil pressure sensor


Timboj
 Share

Recommended Posts

Hi team, I've just installed an N350X into my 03 350Z. After a few days of trying to sort out the idle, I only just noticed I wasn't getting a reading on oil pressure.

I checked the pin diagram in the manual, and I can't see any mention of an oil pressure sensor?

Especially given much of the OEM functionality was included/addressed, I can't believe something so critical to engine protection (and included in stock form) isn't included?

Or am I doing something wrong?

Link to comment
Share on other sites

I could be wrong but I don't believe the factory oil pressure sensor is connected to the ecu in any form. I would expect that, like most other OEM oil pressure setups, it is wired only to the gauge.

Had a quick search and this thread indicates that the sensor is wired to the gauge cluster and then has some form of communication from that to the gauge

 

Link to comment
Share on other sites

Thanks for replying so quickly, Vaughan.

That makes a lot more sense. Total assumption that it would wire via the ECU. 

Curious that it's stopped working after changing to the new ECU. I had a look at the thread you linked and it mention it wires via the AC (HVAC?) controller. I'm getting a 'low pressure' lockout currently for my AC. Probably a huge leap, but could the two be related?

The voltage meter and trip computer are both fine so it may simply be the sensor or wiring.

 

Link to comment
Share on other sites

3 minutes ago, Timboj said:

Curious that it's stopped working after changing to the new ECU. I had a look at the thread you linked and it mention it wires via the AC (HVAC?) controller. I'm getting a 'low pressure' lockout currently for my AC. Probably a huge leap, but could the two be related?

What voltage do you have on An Volt 7 and what is your Low Pressure Lockout setting set to?

Link to comment
Share on other sites

Problem with the AC solved. Adam posted the 6.21.21 firmware and it seems to be working perfectly.

No change for the oil pressure gauge so I'll work on the assumption it's a wiring or sensor issue for now. Thanks

Link to comment
Share on other sites

If I wanted to wire in an oil pressure sensor to the N350X, could you explain how to do so? I've looked at the pin diagram and if I'm reading it correctly, there's only one An Volt expansion (An volt 8)? Does that require a JST connector?

Does that also mean I couldn't wire in fuel pressure as well?

Link to comment
Share on other sites

  • 2 weeks later...
On 1/22/2022 at 10:04 PM, Timboj said:

If I wanted to wire in an oil pressure sensor to the N350X, could you explain how to do so? I've looked at the pin diagram and if I'm reading it correctly, there's only one An Volt expansion (An volt 8)? Does that require a JST connector?

Does that also mean I couldn't wire in fuel pressure as well?

pressure sensors are typically 5v, signal ground an an An Volt, you could use An Volt 8 on the expansion connector with the appropriate plug or you could repurpose an An Volt on the main header. An Volt 3 (MAF), An Volt 10 (RH narrowband O2), An Volt 11 (LH narrowband O2) or An Volt 12 (Evap Pressure) could be used with some rewiring.

Link to comment
Share on other sites

Thanks, Vaughan. I'm starting to get the hang of it.

 

Is there a diagram of the specific pin locations for the two remaining expansion sockets? I'm using CAN1 for a WB controller.

 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...