Vehicle Speed Sensor (VSS)
- VSS is located on top of differential assembly. See Figure . Ensure No. 13 (7.5 amp) fuse in fuse-relay box, located behind driver's side kick panel, is okay. If fuse is okay, disconnect 3-pin electrical connector at vehicle speed sensor.
- Turn ignition on. Using voltmeter, measure voltage between Yellow wire of 3-pin electrical connector and body ground. If battery voltage exists, go to next step. If battery voltage does not exist, repair open Yellow wire.
- Measure voltage of Blue/White wire between 3-pin electrical connector and body ground. If voltage is 5 volts or more, go to next step. If voltage is less than 5 volts, repair open circuit or short circuit to ground in Blue/White wire. The Blue/White wire goes from VSS to PCM, cruise control unit, driver's multiplex control unit or navigation control unit.
- Turn ignition off. Disconnect PCM 22-pin connector. PCM is located below passenger's side of instrument panel below carpet. Using ohmmeter, check continuity of Green/Blue wire between VSS 3-pin electrical connector and PCM 22-pin connector terminal No. 22. If continuity exists, go to next step. If continuity does not exist, repair open Green/Blue wire between VSS connector and PCM.
- Raise and support vehicle. Place shifter in Neutral and turn ignition on. Rotate one front wheel while holding the other front wheel stationary. If voltage pulses from zero volts to about 5 volts, go to next step. If voltage does not pulse correctly, replace vehicle speed sensor.
- Disconnect instrument cluster 30-pin connector. Measure voltage of Blue/White wire between instrument cluster 30-pin connector and ground while rotating one front wheel and holding other front wheel stationary. If voltage pulses from zero volts to about 5 volts, replace speedometer. If voltage does not pulse correctly, repair open Blue/White wire between VSS connector and speedometer.