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O/D Direct & Vehicle Speed Sensor

NOTE: For circuit reference, see WIRING DIAGRAMS  and/or CONNECTOR IDENTIFICATION  .
  1. Remove speed sensor from transmission. Using DVOM, measure resistance between sensor terminals. Resistance should be 560-680 ohms. If resistance is not as specified, replace sensor. If resistance is as specified, go to next step.
  2. Check voltage between sensor terminals when a magnet is put close to tip of speed sensor. See Figure. If a low intermittent voltage is generated, sensor is okay. Check and repair circuits between sensor and ECM. If no voltage is generated, replace speed sensor.
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