Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
CAN Communication
The communication between EMS 2000 and GIU is by CAN. The EMS 2000 talks directly to the ECVT interface GIU via the CAN link. The GIU sends the EMS 2000 information on the following:
- The current status of the park, reverse, neutral and drive switches.
- The current status of the sport/manual switches.
- The current status of the +/- switches (steering wheel buttons if fitted).
- The current status of the +/- switches (selector lever).
- Fault status of all active components.
- The current status of the Park/neutral switch.
The EMS 2000 provides information for the transmission GIU via a CAN-bus. The EMS 2000 controls the position of the ratio control motor indirectly (by means of instructing the GIU to control the motor to a given position).
The EMS 2000 can interrogate the GIU for fault diagnostics and to request real time data and system performance checks when the vehicle is connected to DISplus.
Notes:
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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