Yeah, just had it scanned and codes C1223, and
C1241 came up. Still no CEL on dash. Now off on a different path.
Will look into battery and alternator.
Stay tuned.

 

That’s your process for C1241

 

I couldn’t find any info on C1223

 

MrJason thank you. I notice this process is for gx460. I have a gx470 circa 2007. Does this info apply?

JeffLee

 

it was pulled straight from alldatapro with 2006 GX470 selected.

Sometimes companies will will add a car to a flowchart. I would have to say this would be the correct path to follow. The gx460 was most likely the latest model added to this diagnostic process.


And and to be honest, since I do this for a living, I’d most likely just use this info as a reference point while working my way to the issue.

 

Also... you aren’t going to have the test equipment needed to perform have of those tests.

Mainly its the code code description I’d look at and then perform manual testing on why you have a power issue throwing a code. You’ll need the eirong diagram to do this.


Ill look look more into it tomorrow.

 

Here's an interesting thread as well : https://www.clublexus.com/forums/gx-...223-codes.html

 

Ok. Ignore my info earlier. I completely screwed up with the screenshots.

Someone else logged into into my all data and looked up a 2018 Gx460.

So im going to post the new info now.


My bad.

 

Heres the info for code C1223

 

Here is the info for code C1241

 

I put the pics in order... not sure why they don’t post that way.

But sorry for the confusion.

These are are the steps for the 2 codes you are throwing.

 

From the looks of it.... this could be as simple as a fuse or connection with corrosion... to a wire that’s chewed up by a rodent.

Hopefully it isnt a bad abs module.


But do as the tests state... start at the battery and work your way to the hydraulic pump, checking for voltage first. Then perform voltage drop tests or resistance measurements.

Remember... just because voltage is good at the “end point”.. doesn’t mean that amperage is.
So you’ll need a multimeter and an amp clamp.

The only test light I trust are the nice one that tell you the voltage and direction of amp flow.

 

Thanks. No worries. Yes, I hope it is as simple as a connection.
I checked all the fuses from the get go. They were good.
Nice of you to double check on the info.
I’ll keep you posted.

JeffLee