370Z CAN Bus Proprietary PID's

SonicVQ

The PID is 0x1183. Since the returned value is 0-5, for gears 1-6, this formula should work: A = A +1. Then first should display as 0 + 1 = 1, second gear: 1+1 = 2, etc.

You might need to put the ECM into a diagnostic session (10 C0) for Torque Pro to return results.
Here is a good example of how to setup Torque Pro for a custom PID (VQ37 oil temp)

Oil Temp Gauge w/Torque Pro - Motorvate’s DIY Garage Quick Tip #2



Also, have a look at the free Torque Pro plugin called Torque Scan. This will allow you to scan all modules for the available PIDs and return the raw data for each supported PID.

Note to keep in mind:
Don't confuse CAN IDs (like 0x421) with PIDs (like 0x111F Engine oil Temp).
Any OBD app like Torque Pro, can only use PIDs.

CAN bus IDs are only useful when talking directly on the CAN bus, using CAN bus hardware.
Some ODB apps have a command console or terminal that allow you to manually type commands, but you need to be quick so the ECM doesn't drop out of diagnostic mode.

I use a $14 Arduino Uno (from Amazon, or $3 from Aliexpress) with a $6 CAN bus shield (Aliexpress)

kromberg

Hey Guys,

I am interested in putting some effort into this project. I have successfully built a custom Ardunio setup that reads a bunch of sensor data and then builds CAN Messages and broadcasts them on the BUS. I am currently working a another project to reads messages from the BUS, processes the data from them, and builds new messages and puts them on the BUS. Most of this was straight forward as I am a software developer and was using AEM devices that have fully documented and published message structures.

I am interested in doing something for the 370z that can read data from the car CAN BUS, other external sensors, and then display data on a LCD screen and/or log the data. The hardware cost would be around the $240 range: Ardunio unit, canbus module, SDCard module, 4.5" LCD. The biggest huddle is the 370Z PID messages. Looks like is a spreadsheet that has been created with a good number of PIDs decoded, but it is far from complete. There are PIDs that UpRev and HpTuners knows about( logs and/or uses for tuning ) that are missing. It would be awesome to have the short and long term fuel trims, wideband data, engine load, base fuel schedule, etc. I am guessing they have signed NDAs with Nissan to get them.

So.... I can definitely write the software and provide required hardware. Decoding the missing PIDs is going to take some work, anyone interested in doing that or helping out?

Keith