Vehicle Speed Sensor: Testing and Inspection
Signal Inspection1. Remove the combination meter.
2. Disconnect the speedometer connector.
3. Set the voltmeter to the 5 Volt range.
4. Turn the ignition switch to the LOCK position.
5. Measure the voltage between terminals 3A and 3C of the speedometer connector (harness side) while the rear wheels are turning slowly.
6. If the voltmeter pointer moves slightly, the signal coming to the speedometer is OK. If the pointer does not move, check the vehicle speedometer sensor and/or wiring.
7. Connect the speedometer connector.
8. Install the combination meter.
Sensor Inspection
1. Disconnect the negative battery cable.
2. Remove the vehicle speedometer sensor.
3. Verify that magnetic resistance is felt when turning the vehicle speedometer sensor driven gear by hand.
4. Disconnect the vehicle speedometer sensor connector.
5. Set the voltmeter to the 5 Volt range.
6. Measure the voltage between terminals A and B while turning the sensor slowly.
7. If the pointer does not move, check the vehicle speedometer sensor continuity.
8. Measure the resistance between terminals A and B.
Resistance: Approx. 290 ohms at 20-80°C (68-176°F)
9. If not correct, replace the vehicle speedometer sensor.
10. Apply ATF to a new 0-ring and install it on the vehicle speedometer sensor.
11. Install the vehicle speedometer sensor.
Tightening Torque: 7.9-10.7 Nm (70-95 in.lb.)
12. Connect the vehicle speedometer sensor connector.
13. Connect the negative battery cable.
Troubleshooting Tip