Vehicle Speed Sensor: Testing and Inspection

Fig. 10 Testing speed sensor.:

Analog Meter

1. Connect a circuit tester to meter terminals No. C102-4 and C103-10, Fig. 10.
2. Turn the inner shaft of speedometer slowly and ensure tester indicates a continuity four times per revolution. If continuity is not as specified, replace the speedometer.

Fig. 12 Testing speed sensor (digital meter):

Fig. 13 Connecting circuit tester to speed sensor:

Digital Meter

1. Disconnect vehicle speed sensor to meter subassembly electrical connector, Fig. 12.
2. Connect yellow lead of the connector to 5V power source and the blue lead to ground, Fig. 13.
3. Connect the green lead to the positive lead of the circuit tester and the negative lead to ground.
4. Turn the inner shaft of speedometer slowly and ensure tester indicates a continuity four times per revolution. If continuity is not as specified, replace the speedometer.