REMOVAL & INSTALLATION
See Figures 1 and 2
- Disconnect the negative battery cable.
- Raise and safely support the vehicle. Remove the mounting clip.
- On 1992-95 vehicles equipped with an automatic transaxle, remove the Y-pipe and HEGO sensors from the exhaust system. Remove the speed sensor exhaust heat shield.
- Loosen the retaining nut/bolt holding the sensor in the transaxle. Remove the driven gear with the sensor from the transaxle.
- Disconnect the electrical connector from the speed sensor.
- Disconnect the speedometer cable by pulling it out of the speed sensor.
Do not attempt to remove the spring retainer clip with the speedometer cable in the sensor.
- For 1992-95 vehicles equipped with and automatic transaxle, remove the driven gear retainer and driven gear from the speed sensor.
- Position the driven gear to the speed sensor. Install the gear retainer.
- Engage the electrical connector.
- Make sure the internal O-ring is properly seated in the sensor housing. Snap the speedometer cable into the sensor housing.
- Insert the sensor assembly into the transaxle housing. Tighten the retaining nut/bolt to 30-40 inch lbs. (3.4-4.5 Nm). Install the retaining clip.
- On 1992-95 vehicles equipped with an automatic transaxle, install the Y-pipe and HEGO sensors to the exhaust system. Install the speed sensor exhaust heat shield.
- Carefully lower the vehicle.
- Connect the negative battery cable, then check to make sure the speedometer and odometer are operating properly.
Without Electronic Instrument Cluster
- Disconnect connector at speed sensor and connect an ohmmeter between wire connector terminals and speed sensor end. Reading should be 200-300 ohms.
A reading of 0 ohms indicates a shorted coil and the speed sensor should be replaced. A maximum reading indicates an open coil and speed sensor should be replaced.
- If the ohmmeter reading is between 200-300 ohms, and speedometer operates properly within needle waver, speed sensor is probably functioning properly.
- If available, a known good quality speed sensor can also be substituted in place of existing sensor to check for proper operation.
Because AC and DC voltage measurements are required in the diagnosis of the speed control system on vehicles equipped with an electronic instrument cluster, a special diagnostic tool, Fluke 8022A or equivalent, should be used. Do not perform speed sensor testing on vehicles equipped with an electronic speedometer.
- Raise and safely support the vehicle drive wheels.
- Bring vehicle speed to approximately 30 mph (48 km/h).
- Connect an AC voltmeter to dark green/white wire and ground.
- Back probe the amplifier connector. Voltmeter should read about 6-24 volts. If not, check speed sensor and related wiring. Repair and/or replace as necessary.
- Lower the vehicle.