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Home >> Saab >> 1997 >> 9000 CS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - Aw50-40LE >> Component & Circuit Testing >> Speed Sensor

Speed Sensor

  1. Turn ignition off. Using a DVOM, measure resistance across sensor terminals. Resistance should be 300-600 ohms. If resistance is as specified, sensor and wiring are okay.
  2. If resistance is not as specified, inspect wiring between sensor and Transaxle Control Module (TCM) terminals No. 12 and 31 for input speed sensor, or TCM terminals No. 30 and 31 for output speed sensor. See Figure. If wiring is okay, replace speed sensor.
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