Roll-Over Sensor (Only XC60)

Fig 1: Identifying Supplemental Restraint System Control Module (SRS)

Courtesy of VOLVO CARS CORPORATION

The Roll-Over Protection System (ROPS) consists of a roll-over sensor, of the type gyro sensor, which senses the vehicle's angle. The roll-over sensor is used to give Supplemental Restraint System Module (SRS) early information in case of a roll-over.

If the vehicle's sideways angle changes fast enough, then Supplemental Restraint System Module (SRS) will start a calculation how high the rotation energy is. If the rotation energy is high enough, the control module will activate the roll-over protection.

The roll-over protection activates all seatbelt tensioners and inflatable curtains in the vehicle.

In case of incorrect signal from the roll-over sensor, the control module generates a diagnostic trouble code.

The roll-over sensor is installed on the circuit board on Supplemental Restraint System Module (SRS).