TSP (Trailer Stability Program) is a trailer stability control system installed on Opel and Vauxhall cars. It eliminates trailer sway, prevents rollover, and helps to keep the trailer on a specified trajectory. It is part of the electronic stability control system ESP.
How TSP works
The system detects the presence of a trailer automatically. It activates at speeds over 60 km/h. The system uses the same sensors as ESP. These sensors analyse data on the vehicle’s wheel speed, yaw rate, lateral acceleration, steering wheel angle, and other values in order to determine if the trailer is starting to sway. This data is compared with default parameters that are specified in the TSP settings.
Individual wheels are slowed down if deviations from the parameters are detected. The ABS pump and solenoids are used to do this. The throttle position is also adjusted, which helps to limit the engine torque.
Popular Opel/Vauxhall models equipped with TSP
Causes of malfunction
- ABS sensor failure
- Low brake fluid level
- Yaw rate and lateral acceleration sensor failure
- Ignition coil and spark plug failure
- Installation of inappropriately sized tyres
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