Collision Avoidance and Parking Assist Systems: Testing and Inspection

Diagnostics

The parking aid module performs self check routines and checks the system wiring for short and open circuits. While the system is active the parking aid module also monitors the data from the acoustic sensors.

If a fault is detected, a related fault code is stored in the non volatile memory of the parking aid module and either the front sensors, the rear sensors or the complete system is disabled, as appropriate. To advise the driver of the failure, the parking aid module flashes the indicator LED (light emitting diode) at 2 Hz and sounds a continuous warning tone for 3 seconds, in place of the normal short tone, when the system is activated.

Fault codes can be accessed using T4, which communicates with the parking aid module via the instrument cluster and the I bus.