DR-3B Speed Sensor Circuit to Logic Module

1. With diagnostic read-out tool connected to engine test connector, speed sensor connector disconnected and system in Switch Test Mode, connect and disconnect a jumper wire between terminal No. 24 of red logic module electrical connector and terminal No. 14 of logic module blue electrical connector.
2. If display on read-out tool changes, locate and repair open circuit in wires to speed sensor.
3. If display on read-out tool does not change, replace logic module.
CAUTION: Before replacing the logic module check the terminal of cavity No. 14 of the blue connector to make sure it is not crushed causing a poor connection.