1998 LS400 OBD2 Compatibility
Thread Starter
Driver
Joined: Aug 2009
Posts: 95
Likes: 4
From: kuwait
1998 LS400 OBD2 Compatibility
Hello all, I got recently CP9125 scanner for my cars, it is not reading any codes for me! always FAIL message. Is there any compatibility issue for 1998 LS400?
Or my car have a problem? Any one is using the CP9125 for 1998-2000 LS400 successfully?
Thanks for reading.
Or my car have a problem? Any one is using the CP9125 for 1998-2000 LS400 successfully?
Thanks for reading.
Last edited by mar1; Jul 27, 2012 at 11:21 AM. Reason: corrected the scanner name
Does the scanner say it is compatible with Lexus vehicles? Certain scanners require a key to decode various manufacturers. My guess would be the scanner is the problem not your vehicle.
Thread Starter
Driver
Joined: Aug 2009
Posts: 95
Likes: 4
From: kuwait
It says
"PocketScan Code Reader CP9125 is an easy-to-use tool for novice and light-to-moderate DIY customers. It enables the user to read diagnostic trouble codes (DTCs) from the on-board computers of 1996 and newer OBD II compliant vehicles"
so i thought it would work on 1998 LS400
"PocketScan Code Reader CP9125 is an easy-to-use tool for novice and light-to-moderate DIY customers. It enables the user to read diagnostic trouble codes (DTCs) from the on-board computers of 1996 and newer OBD II compliant vehicles"
so i thought it would work on 1998 LS400
Thread Starter
Driver
Joined: Aug 2009
Posts: 95
Likes: 4
From: kuwait
Thank you guys for your replies, just got athe below from the manufacturer by email;
" If the vehicle was manufactured for sale in the USA it should work, if outside the US this tool will be hit and miss depending on how the programming is done in the computer. If outside the USA then this is the problem."
And I'm from Kuwait, so that's probably the reason. Just ordered an OBD2 bluetooth thing to use my android as a scanner.
" If the vehicle was manufactured for sale in the USA it should work, if outside the US this tool will be hit and miss depending on how the programming is done in the computer. If outside the USA then this is the problem."
And I'm from Kuwait, so that's probably the reason. Just ordered an OBD2 bluetooth thing to use my android as a scanner.
Thread Starter
Driver
Joined: Aug 2009
Posts: 95
Likes: 4
From: kuwait
Thank you guys for your replies, just got athe below from the manufacturer by email;
" If the vehicle was manufactured for sale in the USA it should work, if outside the US this tool will be hit and miss depending on how the programming is done in the computer. If outside the USA then this is the problem."
And I'm from Kuwait, so that's probably the reason. Just ordered an OBD2 bluetooth thing to use my android as a scanner.
" If the vehicle was manufactured for sale in the USA it should work, if outside the US this tool will be hit and miss depending on how the programming is done in the computer. If outside the USA then this is the problem."
And I'm from Kuwait, so that's probably the reason. Just ordered an OBD2 bluetooth thing to use my android as a scanner.
CL Community Team
Joined: Aug 2011
Posts: 4,168
Likes: 1,006
From: Japan
I own ELM327 OBD－II code scanner to use for cars owned by my close friends and my family. It works great for most of the cars even here in Japan but not for a 98 Celsior.
My initial intention was to use it for my 98 Celsior but it was not compatible I found after buying it. I gave up using it for the Celsior but most of Honda cars and some Toyota cars are OK with it and it works as one of good tools for me. I never had any engine check lamp issue on my Celsior so far but when it happened I would use a simple method called TCCS and get the code at the Multi Infornation Display in the cluster.
Toyota must had implemented different system for JDM model of LS400. Due to the American regulation, the LS400 US model must be compatible with OBD-II but the model for the Middle-East might be not the same with US model, I bet.
My initial intention was to use it for my 98 Celsior but it was not compatible I found after buying it. I gave up using it for the Celsior but most of Honda cars and some Toyota cars are OK with it and it works as one of good tools for me. I never had any engine check lamp issue on my Celsior so far but when it happened I would use a simple method called TCCS and get the code at the Multi Infornation Display in the cluster.
Toyota must had implemented different system for JDM model of LS400. Due to the American regulation, the LS400 US model must be compatible with OBD-II but the model for the Middle-East might be not the same with US model, I bet.
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CL Community Team
Joined: Aug 2011
Posts: 4,168
Likes: 1,006
From: Japan
Hi Gene.
TCCS stands for "Toyota Computer Controlled System". It is a system related to the "Diagnosis Connector " under the hood. The TCCS generates 2 digits code partly shown below when "Tc" and "E1" are shorted. Sorry for that I only have a Japanese manual.
As you notice TCCS codes are related to SAE / OBD-II codes but due to the limitation of figures 1-99, sometimes they are not good enough to distinguish trouble points. That's why I wanted to buy a code reader which enables to read code starting PXXX ( the left side).
As I investigate more on 98-00 Celsior's compatibility to OBD-II, all you need is to add some protocol to the reader which is implemented in the Toyota genuine "S2000 Code Reader". But the protocol is not open to the public. If I were skillful and smart enough, I could analyze it and make a new program for a general ELM327 code reader.
TCCS stands for "Toyota Computer Controlled System". It is a system related to the "Diagnosis Connector " under the hood. The TCCS generates 2 digits code partly shown below when "Tc" and "E1" are shorted. Sorry for that I only have a Japanese manual.
As you notice TCCS codes are related to SAE / OBD-II codes but due to the limitation of figures 1-99, sometimes they are not good enough to distinguish trouble points. That's why I wanted to buy a code reader which enables to read code starting PXXX ( the left side).
As I investigate more on 98-00 Celsior's compatibility to OBD-II, all you need is to add some protocol to the reader which is implemented in the Toyota genuine "S2000 Code Reader". But the protocol is not open to the public. If I were skillful and smart enough, I could analyze it and make a new program for a general ELM327 code reader.
Last edited by Yamae; Aug 1, 2012 at 04:32 PM.
the reason the NON-US models won't read is because OBDII is a US standard, not required for other markets. Later when CAN became the standard there was a lot more international flexibility
Lexus Test Driver
Joined: Jan 2012
Posts: 832
Likes: 8
From: CA
HI, Yamae.
Your reply is, as usual, very thoughtful.
It would be highly interesting to have a S2000 emulator.
I would bet a doughnut that you are both skilfull and smart enough (and I like doughnuts very much :-)
Thanks.
Your reply is, as usual, very thoughtful.
It would be highly interesting to have a S2000 emulator.
I would bet a doughnut that you are both skilfull and smart enough (and I like doughnuts very much :-)
Thanks.
Thread Starter
Driver
Joined: Aug 2009
Posts: 95
Likes: 4
From: kuwait
Received the Bluetooth scanner today, again no connection with my 1998 LS400 ECU.
tried it on my XK8 Jaguar and it worked.
So my Lexus is not OBDII compatible.
tried it on my XK8 Jaguar and it worked.
So my Lexus is not OBDII compatible.
Thank you guys for your replies, just got athe below from the manufacturer by email;
" If the vehicle was manufactured for sale in the USA it should work, if outside the US this tool will be hit and miss depending on how the programming is done in the computer. If outside the USA then this is the problem."
And I'm from Kuwait, so that's probably the reason. Just ordered an OBD2 bluetooth thing to use my android as a scanner.
" If the vehicle was manufactured for sale in the USA it should work, if outside the US this tool will be hit and miss depending on how the programming is done in the computer. If outside the USA then this is the problem."
And I'm from Kuwait, so that's probably the reason. Just ordered an OBD2 bluetooth thing to use my android as a scanner.
CL Community Team
Joined: Aug 2011
Posts: 4,168
Likes: 1,006
From: Japan
You probably need a S2000 to read all the codes since your LS400 is not an American model. But without it, you could read the TCCS codes at the cluster without any code scanner but a short jumper wire.