Not every vehicle downtime is mechanical
When the issue is electronic: diagnostics and restoration of an electric vehicle for urban hygiene services
Not every vehicle downtime is caused by mechanical or structural components. More and more frequently, especially on electric-powered vehicles, the issue originates from the electronic management systems.
The problem
This was the case of an electric vehicle for urban hygiene services that arrived at TECAM Service on a recovery truck: the vehicle could no longer move and a blocking error message appeared on the onboard display.
The solution: electronic diagnostics on the electric drive system
The first step was an in-depth diagnosis using SDC, our computerized diagnostic station connected to the vehicle’s data transmission system.
Through CAN-bus parameter reading, the technicians were able to analyze the behaviour of the drive system and identify an anomaly in the battery pack management system.
To identify the actual cause of the failure, it was necessary to remove the traction battery pack, a delicate operation requiring specific expertise on electric vehicles and high-voltage systems. This activity can only be performed by qualified PES/PAV/PEI operators, according to current regulations for work on electrical systems.
The intervention: targeted repair on the battery management circuit
The analysis revealed a malfunction in the battery cell management circuit.
Instead of replacing the entire module, a quicker but far more expensive solution, the team investigated further to identify the specific faulty component.
The repair was then carried out by replacing the defective management circuit, restoring the correct operation of the drive system.
