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Home >> Geo >> 1994 >> Tracker Base, 1.6 U, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnosis >> Code 9, Open Rear Wheel Speed Sensor Circuit
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Code 9, Open Rear Wheel Speed Sensor Circuit

  1. Turn ignition off. Disconnect speed sensor connector. Measure resistance across speed sensor terminals. If resistance is greater than 2000 ohms, replace speed sensor.
  2. If resistance is 1000-2000 ohms, disconnect RWAL EBCM connector. Reconnect speed sensor connector. Measure resistance between RWAL EBCM terminals No. 16 (Orange wire) and No. 17 (White wire). If resistance is greater than 2000 ohms, repair open in speed sensor wiring. If resistance is 1000-2000 ohms, replace RWAL EBCM. See RWAL ELECTRONIC BRAKE CONTROL MODULE  under REMOVAL & INSTALLATION.
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