Instrument Cluster swap (USED) in 2009 Mazda 3
This car came in from a curber lot. Door open light is always on on the dash. Tech determined the issue was with the trunk latch unit as Autel showed all 4 doors properly open/closed but showed trunk always open. Disconnecting the latch/switch at the truck and jumping it made no difference. He tried an used electrical junction box after tracing the wires there. Still no fix. Finally he followed a test plan which led him to the instrument cluster being at fault.
We got a used cluster and installed it, and the door open light isn't on, as a matter of fact it doesn't come on when the doors are open. That would be a good enough solution, except the car doesn't start with the used cluster. He's used the Autel to code/program it to the car, but we still get immo DTC's.
We don't do a lot of these vehicles, is there another procedure we're able to perform to have the new IC play nice with the vehicle? Or has anyone experienced the door open light issue and have a better idea to fix that and reuse the original IC?
What's a curber lot? Mazda says to register keys after replacing the cluster with a new part. The “new” may be important, but I don't know that for a fact. However, if you aren't able to register the keys, or you can register keys but the car still won't start, that may be your issue. It's likely that the cluster and the ECM share a security code, and a new cluster would likely come ready to…
A “Curber” is a term for used car flipper. Guys buy them at an auction and want them fixed as cheaply as possible so they can sell them and maximize their profits. Not sure where the term originated. Thanks for the info and examples, very interesting stuff, altho I hope I don't have to go that involved. I just connected our Autel and ran a scan… I found a code B1320 - LF door ajar circuit open…
I don't know if Mazda BCMs treat body switches the same way but I have run into other makes that will code for, let's say, a LF door open - because the tech has the door open when pulling codes. It goes away immediately once the door switch reads “closed”.
Cool. I've learned some Canadian :) Starting from the beginning is often best. A lot of times I find myself nodding politely as a tech explains all of their tests and results as they're passing the torch. I'm often silently wishing they'd stop talking so I can start thinking and working because I'm planning to completely ignore all their work so far. I'm going to start with no assumptions. But…
My understanding of curbing comes from dealers that take trade ins, but don't want them on their lots. Rather then send them to the auction, they park them on curbs/corners in their neighborhood with a for sale sign on them, making them look like a by owner deal. It's also illegal here in Illinois.
Paul, regarding your Subaru link, are you still interested in figuring out how the odometer value gets stored in the EEPROM, or you’ve already found out?
I haven't done much with Subaru but that image in article, the location looks to be found easy enough in 1A0 & 1B0 I'd wager mileage is FE FF with checksum 01 00. Its really hard to know with virgin files tho they are a bit odd.
I’m able to program it with the AutoProPad, but I would absolutely like to know how it works. I love stuff like that.
I’ll try to put something together. It’s an interesting case for quite a few reasons.
Paul those are some great articles I really enjoyed them! We need more techs like yo.
Eeprom is the easiest and BEST way to get this job done. Cloning the memory from eeprom will transfer VIN, Miles & PATS data. If your changing with same part number then direct cloning is fine. If different part number then its best to just edit in vin, pats and miles leaving the rest untouched.
First, you will need 2 keys. No clones. Second, you will need a scanner capable of doing Mazda PATS, in-out codes. The scanner will give you a code. Visit Mazda's website, pay $35.00 for the out code. Do not turn the key off while waiting for the code. Code changes with every cycle of the key. Or, DL this update software, it has a build in code generator, and it's free…