Diesel Data: Automotive Repair

DR-8C Speed Sensor Wire to Computer


1. Disconnect speed sensor connector, then turn ignition switch Off.
2. Disconnect 14-way computer electrical connector.
3. Connect an ohmmeter between terminal No. 2 of connector and white/orange wire of speed sensor harness connector.
4. If ohmmeter indicates continuity, replace computer Before replacing computer, ensure pins in terminal No. 2 are contacting correctly.
5. If ohmmeter indicates no continuity, locate and repair open circuit.