U0143?

[marine6212]

What module is this? And can I use Alpha OBD TO FIX IT?

 

[Tach_tech]

U0143 lost communication with BCM.

Are you having any issues with the truck? If you clear the code does it come back?

 

[marine6212]

No issues with drive ability, compass quit working, clearing the code and it comes back at next startup.

 

[big red ram]

Well, what ended up being the problem ?

 

[alpinegreenneon]

The VSIM is located behind the far left dash. From the FSM:

DESCRIPTION

The RAM Truck engineered upfitter module called the VSIM (Vehicle System Interface Module) is an available option. Its sales code is “XXS” and “XXSS" and is standard with Ambulance Prep (sales code AH2), a “must have” option with PTO Prep (sales codes LBN or LBV), SSV models, and is available as a stand-alone option. It provides a multitude of useful I/O’s to increase upfitter friendliness and upfit simplification. Vehicles not ordered with this option from the factory cannot be retrofitted.

The VSIM serves as a communication gateway between aftermarket or up-fitter control modules and various control modules in the vehicle via CAN-C BUS and makes some of the inputs and outputs of said modules available for specific applications on the VSIM's interface connector.

Concealed and protected within the molded plastic housing of the VSIM is the printed circuit board and the other electronic circuitry of the module. The module contains a microcontroller and communicates with other electronic modules in the vehicle over the Controller Area Network (CAN) data bus system. Two connector receptacles (4) integral to the VSIM housing are connected to the vehicle electrical system through two dedicated take outs and connectors of the instrument panel wire harness.

The VSIM includes an upfitter wire harness kit consisting of four separate color coded harness bundles. Each individual color harness must only be plugged into its corresponding VSIM connector cavity.

A VSIM cannot be adjusted or repaired and, if damaged or ineffective, it must be replaced.


OPERATION

The microcontroller-based electronic Vehicle System Interface Module (VSIM) (also known as the Vehicle Systems Integration Module/VSIM or the aftermarket module) contains the electronic logic circuitry and software that enable many of the aftermarket equipment and systems typically installed on police or fleet vehicles to communicate with and be integrated with the electronic control modules and features already installed in the vehicle. The VSIM can communicate with aftermarket modules or with other electronic modules in the vehicle using the Controller Area Network (CAN) C data bus.

The VSIM is powered by a fused B(+) circuit and is grounded at all times so that it can operate regardless of the ignition switch position. The module awakens or sleeps based upon the status of the CAN C data bus network. The module monitors both active and stored Diagnostic Trouble Codes (DTC) through On-Board Diagnostics (OBD) and communicates with a diagnostic scan tool using the CAN C data bus.

The hard wired inputs and outputs of the VSIM may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. However, conventional diagnostic methods will not prove conclusive in the diagnosis of the electronic controls and communication between modules and other devices that provide some features of the VSIM. The most reliable, efficient and accurate means to diagnose the VSIM or the electronic controls and communication related to operation of the aftermarket systems connected through the VSIM requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.


DIAGNOSIS AND TESTING - MODULE - VEHICLE SYSTEM INTERFACE

The hard wired input and output circuits between components related to the Vehicle System Interface Module (VSIM) (also known as the Vehicle Systems Integration Module/VSIM or the aftermarket module) may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

However, conventional diagnostic methods will not prove conclusive in the diagnosis of the VSIM or the electronic controls and communication between modules and other devices that provide some features of the VSIM. The most reliable, efficient, and accurate means to diagnose the VSIM or the electronic controls and communication related to operation of the aftermarket systems connected through the VSIM requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information as well as the rambodybuilder.com website.

 

[Mister Luck]

In other words

Did you accidentally have the ignition not in ACC ?

The VSIM is located behind the far left dash. From the FSM:

DESCRIPTION

The RAM Truck engineered upfitter module called the VSIM (Vehicle System Interface Module) is an available option. Its sales code is “XXS” and “XXSS" and is standard with Ambulance Prep (sales code AH2), a “must have” option with PTO Prep (sales codes LBN or LBV), SSV models, and is available as a stand-alone option. It provides a multitude of useful I/O’s to increase upfitter friendliness and upfit simplification. Vehicles not ordered with this option from the factory cannot be retrofitted.

The VSIM serves as a communication gateway between aftermarket or up-fitter control modules and various control modules in the vehicle via CAN-C BUS and makes some of the inputs and outputs of said modules available for specific applications on the VSIM's interface connector.

Concealed and protected within the molded plastic housing of the VSIM is the printed circuit board and the other electronic circuitry of the module. The module contains a microcontroller and communicates with other electronic modules in the vehicle over the Controller Area Network (CAN) data bus system. Two connector receptacles (4) integral to the VSIM housing are connected to the vehicle electrical system through two dedicated take outs and connectors of the instrument panel wire harness.

The VSIM includes an upfitter wire harness kit consisting of four separate color coded harness bundles. Each individual color harness must only be plugged into its corresponding VSIM connector cavity.

A VSIM cannot be adjusted or repaired and, if damaged or ineffective, it must be replaced.


OPERATION

The microcontroller-based electronic Vehicle System Interface Module (VSIM) (also known as the Vehicle Systems Integration Module/VSIM or the aftermarket module) contains the electronic logic circuitry and software that enable many of the aftermarket equipment and systems typically installed on police or fleet vehicles to communicate with and be integrated with the electronic control modules and features already installed in the vehicle. The VSIM can communicate with aftermarket modules or with other electronic modules in the vehicle using the Controller Area Network (CAN) C data bus.

The VSIM is powered by a fused B(+) circuit and is grounded at all times so that it can operate regardless of the ignition switch position. The module awakens or sleeps based upon the status of the CAN C data bus network. The module monitors both active and stored Diagnostic Trouble Codes (DTC) through On-Board Diagnostics (OBD) and communicates with a diagnostic scan tool using the CAN C data bus.

The hard wired inputs and outputs of the VSIM may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. However, conventional diagnostic methods will not prove conclusive in the diagnosis of the electronic controls and communication between modules and other devices that provide some features of the VSIM. The most reliable, efficient and accurate means to diagnose the VSIM or the electronic controls and communication related to operation of the aftermarket systems connected through the VSIM requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.


DIAGNOSIS AND TESTING - MODULE - VEHICLE SYSTEM INTERFACE

The hard wired input and output circuits between components related to the Vehicle System Interface Module (VSIM) (also known as the Vehicle Systems Integration Module/VSIM or the aftermarket module) may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.

However, conventional diagnostic methods will not prove conclusive in the diagnosis of the VSIM or the electronic controls and communication between modules and other devices that provide some features of the VSIM. The most reliable, efficient, and accurate means to diagnose the VSIM or the electronic controls and communication related to operation of the aftermarket systems connected through the VSIM requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information as well as the rambodybuilder.com website.