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Home >> Geo >> 1992 >> Tracker Base, 4WD, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnosis >> RWAL Trouble Codes >> Code 9, Open Wheel Speed Sensor Circuit
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Code 9, Open Wheel Speed Sensor Circuit

  1. Turn ignition off. Disconnect speed sensor connector. Measure resistance across sensor terminals. See Figure . 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 EBCM terminals No. 16 and 17. See Figure . If resistance is greater than 2000 ohms, repair open in speed sensor wiring. If resistance is 1000-2000 ohms, replace RWAL EBCM.