Dr2 - Code 15, Speed Sensor Circuit
- With diagnostic readout box connected to engine harness connector, turn ignition switch to the "OFF" position. Disconnect speed sensor connector. Place system in Switch Test Mode. Connect a jumper wire between the terminals of speed sensor harness connector.
- Make and break this connection. As you make and break this connection, the display on the readout box should change. If display changes, replace the speed sensor. If it does not change, connect a jumper wire between cavity No. 24 of the White (Red on turbo) and cavity No. 14 of the Black (Blue on turbo) logic module connectors.
- Make and break this connection. As you make and break this connection, the display on the readout box should change. If so, repair the wires to the speed sensor for an open circuit. If display does not change, replace the logic module after first checking to make sure that terminal of cavity No. 14 is not crushed.