Vehicle Speed Sensor (VSS)
- If speedometer operates, VSS is okay. If speedometer does not operate, disconnect electrical connector from VSS. Remove VSS. Connect battery positive lead to terminal No. 1 and negative lead to terminal No. 2. See Fig 1.
- While rotating gear, measure voltage between terminals No. 2 (negative lead) and No. 3 (positive lead). Replace VSS if voltage does not alternate between zero and 12 volts, 4 times per revolution.
- Disconnect VSS connector. Check voltage at VSS connector terminal No. 1. Voltage should not exist. Turn ignition on. Voltage should exist. If voltage is not as specified, repair wiring.