Hi guys,
I posted a thred about having starting issues with my x300. Ive got the battery light on aswel as cheak engine, the rpm stays at 0 while cranking. The fuel pump is working aswel as the crank sensor.

Does anyone know how i can get error codes up? And how to wipe them.

Any help welcome.

 

You need to plug an OBD-II reader into the OBD port in order to read the codes. Most readers will also be able to clear the codes. Of course if you haven't fixed the problem, the codes will just reappear.

Why do you think that your crank sensor is working? A tach showing zero rpm during cranking is in fact a pretty good sign that the crank sensor is defective.

 

Yeah, that sounds like a very good question to me also!

 

Ok thanks guys silly question wheres the port? And i replaced the sensor with a brand new one so not sure what to do now

 

On LHD cars it's under the dash by the driver's right knee. Not sure about RHD cars, so look by your left knee and if not loo at the passenger side. It's a big white plug, you can't miss it

 

If you have replaced the CKPS, then the wiring to the ECM is suspect, I guess. Many folks here in the US, where most cars have sunrrofs, are experiencing water ingress problems due to roof drains and the ECM wiring corrodes. I would also check the fuses for the ECM.

 

Hi again thanks :-) i have the rh drive as im in the uk so will look under the dash. My X300 does have a sunroof so water ingress could be the issue. Will cheak all the ecm fuses and report bk

 

Hi guys i have changed the ecm fuses and she still wont go! Im really pulling my hair out now. It seems an age since ive heard her start.

 

Dave,

Time for some troubleshooting. Have you plugged in a code reader yet?

If you have a voltmeter and the electrical guide in hand, we can help you to check likely problem areas.

Just changing parts will become quite expensive and probably won't solve the problem.

You can download the electrical guide for free at jagrepair.com

 

Yes i do have a voltmeter, i havent plugged in a diagnostics yet as not sure where the plug on the rh drive is

 

Was told to plug in the code reader under the steering wheel is the attached photo the plug for the code reader?

 

It would sure be nice to see the business (contacts!) end of that plug!

 

Hi im sorry im confused does this mean its not the code reader plug

 

Hi


Just to add to the conversation... I just took some pictures of the OBDII interface connector. On LHD X300 it's located on the RHS of the driver's side under the steering wheel dash on the side above the accelerator by the ski slope. It will be obvious. See the picture attached.


Be aware leaving the Reader connected can drain your battery so be sure to unplug after use


I hope this helps
Good luck let us know how you do.



BigBoss in Dallas TX

 

I have now found the plug for the code reader. Attached is a photo of what the clocks show when i attempt to start the car,

 

Hears the photo

 

As Allen says, it is time for some diagnostics. In case what that means is not clear, let me lay it out AS I SEE IT. Others might have different methods.
1) I would use my ohmmeter to measure the resitance of the CKPS. I think the correct value is about 200 ohms, but someone will step in to help, or find it in the archives, or I can find it later.
2) If the value looks good at the sensor, then use the schematic to find the ECM pin numbers and test the sensor connections there. If it is not withing a few ohms of the previous measuremnt, find the wiring problem.
3) Read the OBD codes and post them.
4) Use the schematic to find the 12 volt input(s) (referred to as B+ in another thread!) of the ECM, and either back pin the connector or remove the connector and assure the voltage is there. Look for corroded terminals while you are at it.

At this point, I suspect you will have data that gives a clear picture of where to go next, so post it and we will help from there.

 

Dave,

Ross is right on with his suggestions. I would add just that it might be worthwhile to double check that the crank sensor plug is correctly and fully seated in the harness socket. Sometimes if these connectors are not pushed all the way home until they click, they work their way loose.

 

Hi again,
Thanks for all your help, will check the CKPS and i have a "maxi scan obdii" on its way so will read the codes and post them on hear..

 

Well my maxi scan code reader arrived today, plugged it in just for it to tell me it cant connect with the vehicle! So im geussing the ECU is the problem? Any advice or thoughts welcome