Vehicle Speed Sensor (VSS) Input
- Disconnect 3-pin connector from speed sensor, located on right side of engine. Using ohmmeter, check for continuity between Black wire and ground. If continuity exists, go to next step. If continuity does not exist, check for open in Black wire. Check for poor ground connection. Repair as necessary.
- Turn ignition on. Using voltmeter, check voltage between Yellow wire and ground. If battery voltage exists, go to next step. If battery voltage does not exist, check for short to ground in Yellow wire. Check for blown fuse No. 1 (10-amp) in dash fuse/relay box (located at left kick panel). Repair or replace as necessary.
- Ensure ignition is on. Check voltage between Orange wire and ground. If reading is about 5 volts, system is operating properly. If reading is not about 5 volts, check for open or short to ground in Orange wire.