Right now I am using a OBDlink MX. I have another one coming. However when I look a certain parameters such as the following
1.Misfire
2. Fuel System
3. Catalyst
4. O2 Sensors
5. .......many others

It says that the information is not Available. Is there something I am missing or does it have to do with the type of OBD that I am using.

Thanks in advance

 

The O2 sensors are the rare Titanium based technology vs. the more common Z . The titanium changes resistance from a 5.0 volt reference signal from the ECU returning back as a changed value . The Z generates it's own voltage from a ground wire , the other wire is the sensor value returned to the ECU .

Can you change the Parameter ID's ( PID ) on your device ? You can with the ELM327 . And they also have a specific O2 sensors test as a PID configuration page .

 

I can add user defined PIDS?

Also what about all the other ones like MAF. I get nothing

 

You can pic from a very long list of PID's on the EML327 software .

The MAF should read about 4.0 grams / second at 650 RPM and sometimes has to be multiplied by a factor of 10 to be right ( cheap Chinese rip off of a Canadian patent )

 

The MAF readings need multiplying by 100 to give grams per sec. it is not an error, just the way the Software was programmed.
Andy explained it to me in an email, I may get this wrong, but from memory the units are 1/10 of a kg per second,ie: 100g/sec = 1 hectogram/second.
So 0.05 on the MAF means 0.05hectogram/sec x 100grams/hectogram = 5 g/s. (the hectograms cancel out)

 

Well it sounds like that I don't need a better OBD but a EML327. Recommendations?

 

SO after some long research there is only certain software that will read all the Jaguar codes. I am wondering what everyone else is using

 

Hi Phil,

It looks like the parameters you want to read are Inspection/Maintenance (I/M) readiness monitors. The OBD-II specification was not legally mandatory in the U.S. until 1996, so the X300 system is very primitive. The PIDs or I/M readiness monitors you would like to read may simply not be supported. Before you spend money on a different scanner, it might be worth visiting a local auto parts store to ask them to see if their scan tool can read the Live Data and I/M readiness monitors you seek. If their scanners can't read that data, it may not be supported on an X300. Unfortunately I don't have an X300 on hand to test.

For later Jaguars (X100/X308 and later), I invested in the Ford/Jaguar IDS and SDD software packages and a genuine Drew Technologies Mongoose cable and a Ford VCM (original, not type 2). I am told that some high-end third-party systems can read all the proprietary Jaguar codes, such as AutoEnginuity with the extra-cost Jaguar enhancement, and possibly some of the higher-end handheld scan tools from companies like SnapOn, Autel, Launch, etc.

Some of our members are using the affordable iCarsoft i930 Jaguar/Land Rover scanner. You might search the forum to see if any members are successfully using the i930 on an X300. As others have mentioned, an ELM327 bluetooth or WiFi OBDII adapter and the Torque Pro app or equivalent can probably read all the data supported by your X300.

Cheers,

Don

 

There are fuses # 6 / 5 amp trunk , # 10 / 5 amp RH heelboard fuse box and one of the wires go through the pain in the *** BT4 connector above the fuel tank ( don't remove it , just insured the 2 overcenter lock pin are engaged )

 

Any obd2 reader will get you the standard p-codes, you know, bad injector, bad oxygen sensor, bad egr, etc

What you need a special device to read is ABS codes and Transmission codes as well any body or other jaguar specific codes. Honestly, the only one I’ve come across that seems common is when one of your wheel sensors get dirty and set off an ABS code. I have a WDS to read that though.

If you go into the General section, you’ll find threads discussing WDS/IDS. Long thread, 100s of posts. Worth reading through. There’s a lot of great information there. I’ve read through it several times.

 

See that is the problem I can't even read the o2 sensors because it is saying that it is not available.

 

Those are the I/M Readiness Monitors of the onboard diagnostic system that emissions/smog testing facilities reference to known whether DTCs have been cleared recently. The I/M Readiness Monitors are different from the Live Data streams, which show real-time sensor output signals such as O2S Voltage, Coolant Temperature, Mass Air Flow rate, etc. In Torque Pro I think you'll find these data under Torque Scan.

Cheers,

Don

 

SO I borrowed a buddy's OBD and same thing. I tried the Torque scan and I see the same stuff that I see looking at all the other displays. Pretty much gives me whatever is on the dash. Speed, Revs and it gives me phone stuff. I guess I need to find a real Jag scanner. Don't know what the difference is with this car compared to others that have 1997. Oh well, pull out the checkbook.

 

12 bucks Ebay includes cheap low quality software .

The free software you see on the internet is a scam to get you to buy the whole program so you can see the rest that you need like live data .

https://www.ebay.com/itm/ELM327-USB-...sAAOSwGtNXiarS

 

I have 95 and 97 X300s - both work with my OBD unit
I have a PLX Kiwi3 OBD2 sender which connects via Bluetooth to my Apple phone. I chose Kiwi3 because it is one of the few that are Apple-compatible.
I then bought the AutoDoctor software.
Not the cheapest option at around USD$85 for the Kiwi3 and about another $60 for the software.

But it works. I get live data. It diagnosed my jamming throttle cable (jamming at 51%max throttle opening due to frayed cable) which when repaired, has been the single biggest performance improvement, so worth the money for that alone.

The early Jaguar OBD info is very limited compared to a modern car such as my 2016 Volvo which gives vastly more info.

 

Well I tried auto doctor and most of the functions I get "not supported by the ECU" not sure how that can be when a lot of you are getting data. Could it be an issue with the ECU or I have an "older" ECU? As Don B stated I may need to go with an actual Jaguar unit.

 

The Jaguar systems are necessary for later models, but for an X300 I think any good modern OBDII scanner should be able to read all the data supported by your powertrain. Can you give us a list of the data you can read, or the data that is not supported, whichever list is shorter?

Cheers,

Don

 

Engine Torque
Engine Power
Battery Voltage
Throttle position
Vehicle speed sensor
Engine RPM
Engine Load
MONITOR STATUS SINCE DTC CLEARED

And that is it

 

How is the live data reported? Is it relatively quick with the response? All of the live readers I have (Torque and MoviPro) work by taking a reading every second, so when I monitor something like trims and oxygen sensors readings, I only get data every second, not steady and constant.

 

I think the refresh rate is higher when you use a UBS vs. Bluetooth