Wiper Motor Blocking Protection

The wiper park signal is also used by the CJB for blocking protection of the windshield wiper motor. This feature protects the motor in the event of the wiper operation being obstructed.

If the CJB does not receive the wiper park signal for a period of 16 seconds, when the wiper motor is active, the CJB removes the power supply to the motor. The motor is disabled for a period of 3 minutes or until the ignition is switched off and on again. Even after the 3 minute period has elapsed, the CJB will not automatically switch the motor on, to prevent the risk of injury. The wiper switch must be moved off and then on to reactivate the wiper motor. The blocking protection is active in all wiper switch positions and can only be reset by turning the ignition off.