Diesel Data: Automotive Repair

3A Speed Sensor Circuit (Code 15)


1. Connect diagnostic read-out tool to engine test connector, then place ignition switch in Off position.
2. Remove speed sensor from transaxle, then put the system into switch test mode.
3. If display on read-out tool changes while rotating the speed sensor, check speed sensor for proper positioning in transaxle.
4. If display on read-out tool does not change while rotating speed sensor, proceed to Test 3 step B.