xj8 pinpoint tests
#1
07-29-2009, 11:56 AM
Guest
Posts: n/a
xj8 pinpoint tests
I have an xj sport 3.2 1999. I have been having a few issues which I have managed to fix with a combination of AutoEnginuity Scantool, the workshop manual and this Jag forum. Thanks to all of you who make this about the best forum I have come across.
However, the one thing I am missing from my diagnostic kit is the pinpoint tests that need to be performed when a DTC is being investigated. I have gone through my CD workshop manual - from ebay - and can't find them.
Does anyone know where they are or can point me to them.
All help much appreciated.
However, the one thing I am missing from my diagnostic kit is the pinpoint tests that need to be performed when a DTC is being investigated. I have gone through my CD workshop manual - from ebay - and can't find them.
Does anyone know where they are or can point me to them.
All help much appreciated.
#2
07-29-2009, 01:25 PM
Join Date: Mar 2008
Location: Powell, Ohio U.S.A. 43065
Posts: 2,521
Likes: 0
Received 70 Likes
on
56 Posts
I am not sure I understand your question correctly, but hopefully this information will speak to it:
There are some pinpoint tests for various circuits that I have found on the JTID CD, one in particular is a step by step testing regime for the transmission solenoids. There are likely many circuit fault trees which are not included in tne JTIS, and yours may not be, depending on the nature of the fault you are trying to trace.
The Jaguar WDS and IDS diagnostic equipment software guides the user through pinpoint tests for most DTC's, and I do not know if this information is available through any other source. Perhaps what you have encountered is a directive in the JTIS to "perform pinpoint test"...that's what they are referring to, which means connecting a Jaguar portable test unit (PTU) for the procedure.
I have no experience with the Auto Enginuity system but my understanding is that, while capable of retreiving fault codes and streaming data from your Jaguar that most generic scanners cannot, it is not likely to have such testing regimes as the factory equipment. Pinpoint test with WDS requires connection of voltage probes etc. to provide sufficient inputs to satisfy each question that the software asks, and then it asks the next one. I don't think the AE can ask you the questions, or has capabilty of obtaining the answers.
That leads the choices of access to Jaguar proprietary equipment, or a wiring schematic and alot of time. I rely on all three to get me where I have to go, but I don't know of any other suggestions to help you get there.
If you would like to post the DTC you are trying to trace and a description of the problem and resultant symptoms, someone may be able to suggest a course of action. Tendancies become evident over time that can serve as a useful shortcut to comlete testing: some components routinely fail, some almost never do. Wiring harnesses are known to develop faults in particular locations, most others are nearly impervious to damage. An owner or someone like myself may have solved the same problem on another similar vehicle that you are now having with yours.
There are some pinpoint tests for various circuits that I have found on the JTID CD, one in particular is a step by step testing regime for the transmission solenoids. There are likely many circuit fault trees which are not included in tne JTIS, and yours may not be, depending on the nature of the fault you are trying to trace.
The Jaguar WDS and IDS diagnostic equipment software guides the user through pinpoint tests for most DTC's, and I do not know if this information is available through any other source. Perhaps what you have encountered is a directive in the JTIS to "perform pinpoint test"...that's what they are referring to, which means connecting a Jaguar portable test unit (PTU) for the procedure.
I have no experience with the Auto Enginuity system but my understanding is that, while capable of retreiving fault codes and streaming data from your Jaguar that most generic scanners cannot, it is not likely to have such testing regimes as the factory equipment. Pinpoint test with WDS requires connection of voltage probes etc. to provide sufficient inputs to satisfy each question that the software asks, and then it asks the next one. I don't think the AE can ask you the questions, or has capabilty of obtaining the answers.
That leads the choices of access to Jaguar proprietary equipment, or a wiring schematic and alot of time. I rely on all three to get me where I have to go, but I don't know of any other suggestions to help you get there.
If you would like to post the DTC you are trying to trace and a description of the problem and resultant symptoms, someone may be able to suggest a course of action. Tendancies become evident over time that can serve as a useful shortcut to comlete testing: some components routinely fail, some almost never do. Wiring harnesses are known to develop faults in particular locations, most others are nearly impervious to damage. An owner or someone like myself may have solved the same problem on another similar vehicle that you are now having with yours.
#3
07-29-2009, 02:29 PM
Guest
Posts: n/a
xj pinpoint tests
Hi JagTechOhio,
Many thanks for your very prompt response.
I'm not making myself clear I guess.
The OBD scanner reported P0102. After replacing the MAF, P0102 was still coming up but I managed to find some pinpoint tests on the internet which helped me find that it was actually a 10a fuse which had blown. I had to cross reference with the wiring diagrams etc. but got there in the end. So basically I wasted money on a part I didn't need.
I now have DTC P0354 which tells me I have a problem with an ignition coil. I managed to source a replacement from ebay - where else - which I have now installed and the fault has gone. It seems I struck lucky this time and the replacement coil has done the job.
I am semi proficient with a multi meter and would have liked to try and find the exact fault before shelling out on the part.
I have the JTIS software and cannot find any tests of this nature, but I am new to it and haven't gone through it with a fine toothcomb as yet.
I hope this makes more sense to you, as if I have any future problems I would like to be able to diagnose before parting with any more of the cold hard cash for a part I may not need.
cheers.
Many thanks for your very prompt response.
I'm not making myself clear I guess.
The OBD scanner reported P0102. After replacing the MAF, P0102 was still coming up but I managed to find some pinpoint tests on the internet which helped me find that it was actually a 10a fuse which had blown. I had to cross reference with the wiring diagrams etc. but got there in the end. So basically I wasted money on a part I didn't need.
I now have DTC P0354 which tells me I have a problem with an ignition coil. I managed to source a replacement from ebay - where else - which I have now installed and the fault has gone. It seems I struck lucky this time and the replacement coil has done the job.
I am semi proficient with a multi meter and would have liked to try and find the exact fault before shelling out on the part.
I have the JTIS software and cannot find any tests of this nature, but I am new to it and haven't gone through it with a fine toothcomb as yet.
I hope this makes more sense to you, as if I have any future problems I would like to be able to diagnose before parting with any more of the cold hard cash for a part I may not need.
cheers.
#4
07-29-2009, 02:52 PM
Join Date: Mar 2008
Location: Powell, Ohio U.S.A. 43065
Posts: 2,521
Likes: 0
Received 70 Likes
on
56 Posts
No, you and I are not on the same page for sure. It doesn't take a WDS prompt to make me check all fuses as a preliminary step to anything, and a cheap scanner to read generic codes is alot more of a pinpoint than you'd ever get poked with on an earlier model. There isn't anything you can't figure out with a schematic and a multi meter, it just takes longer and requires more deductive reasoning...so I'm not sure what you are looking for, but best of wishes finding it.
Thread
Thread Starter
Forum
Replies
Last Post
mls0036
XJ XJ8 / XJR ( X308 )
24
10-17-2015 10:03 AM
Guy-Pierre Boucher
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
7
09-16-2015 05:55 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)