DR-3A Fault Code 15 Speed Sensor Circuit

1. Connect diagnostic read-out tool to engine test connector.
2. Disconnect speed sensor connector, then put the system into switch test mode.
3. Connect a jumper wire between speed sensor harness connector terminals.
4. If display on read-out tool changes while making and breaking connection, replace the speed sensor.
5. If display on read-out tool does not change while making and breaking connection, proceed to step B.