![snap on modis temperature sensor snap on modis temperature sensor](https://www.snapon.com/Files/Diagnostics-US-2020/Platforms/MODIS-Ultra/MODISUltravideothumb.jpg)
He explained that somehow the scan tool was corrupting the OCS module only when you do a "scan all modules" then " clear all faults".
SNAP ON MODIS TEMPERATURE SENSOR SOFTWARE
He had even went as far as telling me that the problem has been fixed as of 18.4 software version. I explained what I had found over a 3-month span and he addmitted that they were aware of a problem. He had checked with another rep who did not know anything about it either so I called tech support. I followed diagnostic which lead me to a faulty OCS module / seat assembly.īy now I have a pretty good idea what is going on so I called my local Snap-On rep and asked if he had heard of this. I scanned it and found a B1797-OCS calibration abnormal code. He said the codes was something to do with the occupant classification module. I asked the tech and he told me that for some reason the light came on after he cleared the codes in an attempt to fix the steering angle sesnor problem. I went out to the shop and got it calibrated but noticed an SRS warning lamp on. So just last Thursday, 10/25, I got a call for an 09 Tacoma that needed a steering angle sensor calibration done. By now I'm convinced there is something going on with the Snap-On software but I did'nt have a way to prove it and did'nt feel like wasting time trying to explain it to tech support. Coincidentally he had just had a Lexus the week before with exactly the problem I had described but in that case he had just assumed the shop screwed up so he did not look too deep into it. I called a fellow mobile tech and told him what I had been seeing. I checked it out and confirmed that it does indeed need a seat cusion / OCS module. A tech had used a snap on tool to "clear all faults" and then an SRS warning light came on with faults for OCS that were not there before. So a few weeks go by and I get another similar call with the same story. It got me thinking about what could have happened but since it was the first time I had heard of it I just noted it and kept moving. Each and every case required a new passengers seat cushion / OCS module to fix it. Several techs had suggested that possibly the snap on scanner had caused the problem. However, after doing a read all codes and clear all, the SRS warning lamp came on. I found several cases where techs had no airbag light on. They were adamant that the light was not on, so I started to research this problem. I asked what tool they were using and they said a Snap-On Modis Ultra was used. They said they had scanned it for faults and cleared those faults then the SRS warning lamp came on. I got curious so I asked specifically when they noticed the light on.
![snap on modis temperature sensor snap on modis temperature sensor](https://i.ebayimg.com/images/g/sEAAAOSwhXxeVZI0/s-l400.jpg)
The shop started telling me how the car had no airbag light on when it arrived but at some point it came on during the crash repair process. So I performed my diagnostics and found that the OCS module was bad and needed to be replaced. The zero point calibration procedure is a common thing that needs to be done on nearly every Toyota and Lexus that was in a rear-end collision. I tried to perform a zero point calibration procedure but it would fail every time. I found codes B1795-occupant classification ecu malfuntion and B1797-calibration abnormal.
![snap on modis temperature sensor snap on modis temperature sensor](https://aa1car.com/scantoolhelp/snap_on_scan_tools.jpg)
So rewind about 3 months ago when I got a call from a bodyshop to diagnose an airbag warning lamp on with fault codes stored on a 2011 ES350. It's a bit of a long story but follow it to the end and I promise it'll be worth it. I just want everyone to be aware of what I feel is a huge problem that should have been made known throughout our industry. First of all I am not trying to bad mouth Snap-on by any means. I wanted to share an issue that I have been noticing lately on some Toyota and Lexus vehicles.