DR-3A Fault Code 15 Speed Sensor Circuit

1. With diagnostic read-out tool connected to engine test connector, place ignition switch in Off position, then disconnect speed sensor connector.
2. Place system in Switch Test Mode.
3. Connect and disconnect a jumper wire between terminals of speed sensor harness connector.
4. If display on read-out tool changes as jumper wire is connected and disconnected, replace speed sensor.
5. If display on read-out tool does not change, proceed to Test 3 step B.