Mazda Telematics TCM Emulator – CAN Emulator – U3000 Fault

The Mazda Telematics TCM Emulator is designed for vehicles manufactured by Mazda and is intended to restore proper system operation in cases where the original telematics control module (TCM) is damaged.

The device performs CAN communication emulation of the TCM, allowing other vehicle control units (BCM, IPC, PCM) to receive correct status and identification frames.
As a result, the U3000 fault code is no longer stored in the vehicle’s diagnostic memory.


Operating Principle
- The emulator generates required CAN frames identical to those of the original TCM
- Responds to diagnostic requests on the CAN network
- Simulates the presence of the module within the vehicle topology
- Prevents vehicle systems from entering fail-safe or emergency modes


Supported Issues
- U3000 – Internal Control Module Fault (TCM)
- Loss of communication with the telematics module
- Damaged TCM (water ingress, short circuit, power supply failure)



Technical Specifications
- CAN Bus: CAN (HS-CAN)
- Function: logical emulation of the Telematics TCM module
- Installation: direct connection in place of the original TCM
- Coding: not required
- Programming: not required
Plug & Play

Result After Installation
- No U3000 fault code stored in memory
- Stable CAN communication
- No warning messages on the instrument cluster
- Proper operation of remaining control units


Service Notes
- The emulator does not provide telematics functions (eCall, GPS, online services)
- Intended solely for CAN fault elimination
- Service / diagnostic product