Circuit integrity testing for an active wheel speed sensor Rob is presented with a Mazda 2, where the ABS warning light persisted after the customer had replaced the sensor. Rob tests the circuit at the main connector and confirms a poor connection resulting in the magnetoresistive sensor not getting the power signal required to operate. Rob also shows us what the digital square wave output of these sensors looks like on a scope. To join TaT visit www.tat.net.au/social.html Burson Auto Parts | T