Rear Speed Sensor
- Disconnect rear wheel speed sensor connector. Check continuity between sensor terminal and sensor body. If continuity is present, replace rear speed sensor. If continuity is not present, remove rear wheel speed sensor from vehicle. See REAR WHEEL SPEED SENSOR under REMOVAL & INSTALLATION.
- Connect positive voltmeter lead to rear sensor terminal RR+. Connect negative voltmeter lead to rear sensor terminal RR-. See Fig 1. Connect positive battery terminal to rear sensor terminal PSEN. Connect negative battery terminal to rear sensor terminal RR-. Connect a 2000-10,000 ohm resistor between rear speed sensor terminal RR+ and battery positive terminal.CAUTION: Cover shaft of screwdriver with a rag to prevent chipping sensor tip.
- Cover shaft of screwdriver with a rag. Wave screwdriver past tip of speed sensor. As screwdriver is waved in front of sensor tip, voltage should alternate between less than 2 volts and more than 2 volts (up to 12 volts). If voltage is not as described, replace rear speed sensor.