It contains some opinion in addition to information from Chrysler factory training as well as service info pulled from my friend Shane Steeles 2018 Ram 1500.
The sims 4 parenthood modsIt is important to note that I am making assumptions that, because of how new these systems are, most of the information I am going to share will apply to all current Chrysler models.
Lets start by talking about what the Security Gateway Module (SGW) is and what its purpose is.
The SGW was implemented in some models in the 2018 model year and all models 2019 going forward.
Edt vs estThe SGW in short is a module whose function is simply to keep the communication networks secure.
The SGW protects the vehicle networks from being exploited by creating a firewall between two portions of the network with the most vulnerability.
Function: So how does the SGW work It separates the vehicle network into private and public sectors.
Access to the private sector of the network is limited without authentication.
As of now, authentication is limited to Chrysler licensed devices.
The SGW is also connected to the CAN C and CAN IHS busses but in the case of the 2018 Ram, is not directly connected to the LIN bus.
It is connected directly to the radio via both a CAN C and IHS bus.
Although the SGW wiring diagram may make it look like the SGW functions a central gateway it is important to note that it is not used to communicate signals amongst modules on the private side of the network.
It serves as a frame gateway and does not provide signal gateway functionality.
Chrysler Diagnostic Tool Drivers And Does
The SGW does not contain any drivers and does not directly operate or control any vehicle components but rather allows only authenticated messages on to the private networks.
As of now there are two tools that will allow authentication through wiTECH 2.0.
The Micropod II and a J2534 device.
I got some help from Joey at AE Tools to help explain the advantagesdisadvantages of these two options: When using a J2534 device the wiTECH subscription is registered to the software, essentially locking it to the computer.
With the Micropod II the wiTECH subscription is locked to the tool allowing it to be used on any computer, tablet, or even cellphone as long as a connection to the internet is available.
When working with the Micropod II, the vehicle communicates through the Micropod II directly with the Chrysler servers via WiFi.
The browser of said laptoptabletcellphone logs into wiTECH to access vehicle communication.
The J2534 device will work with the drivers and the downloaded software and port them to the wiTECH cloud instead of using an internet browser.
Because of this an internet connection must be available at all times including during test drives.
Many dealerships are equpiied with WiFi hotspots for this purpose however, most smartphones now have WiFi hotspot capabilities.