Vehicle Speed Sensor Check

VEHICLE SPEED SENSOR CHECK





1. Turn OFF ignition switch.
2. Disconnect coupler(s) from powertrain control module.
3. Bring ohmmeter probes in touch with coupler terminals from harness side.
4. Check resistance of VSS.
Resistance between terminals
C22-4 and C22-12 : 100 - 300 ohms
Resistance between terminal and ground : 1 M ohms or more
If resistance are out of specification, check wire harness and connector for open or short and VSS itself for resistance. If resistance are within above specifications, proceed to next step.
5. Visually check VSS and counter shaft gear for the following:
- No damage
- No foreign material attached
- Correct installation
If any malfunction is found, clean, repair or replace.





Separately from the above inspection, vehicle speed sensor itself can be checked on its resistance by disconnecting coupler.





NOTE:
- Function of vehicle speed sensor can be checked by measuring generated pulse as voltage.
- For its measurement, use an analog type voltmeter while spinning wheels on lift and with selector lever in "D" range.