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Home >> Subaru >> 1997 >> Legacy Outback Limited, Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - 4-Speed - With 2-Digit DTCS >> Diagnostic Tests >> DTC 32: Vehicle Speed Sensor No. 1 >> 1997-98 Impreza, 1997-98 Legacy & 1998 Forester

1997-98 Impreza, 1997-98 Legacy & 1998 Forester

  1. Turn ignition switch to OFF position. Disconnect connector from transmission. Measure resistance between transmission connector receptacle terminals. Resistance between transmission connector terminals No. 9 and No. 16 should be 450-720 ohms. If resistance is okay, go to next step. If resistance is not within specification, replace vehicle speed sensor No. 1.
  2. Disconnect connector from TCM. Measure resistance between TCM connector B54 and transmission connector. Resistance between connector B54 terminal No. 12 and transmission connector terminal No. 16 should be 0-1 ohm. If resistance is okay, go to next step. If resistance is not within specification, repair open in harness between TCM and transmission connector.
  3. Measure resistance between TCM connector B54 and transmission connector. Resistance between connector B54 terminal No. 7 and transmission connector terminal No. 9 should be 0-1 ohm. If resistance is okay, go to next step. If resistance is not within specification, repair open in harness between TCM and transmission connector.
  4. Measure resistance between TCM connector B54 and ground. Resistance between connector B54 terminal No. 7 and ground should be more than 100 k/ohms. If resistance is okay, go to next step. If resistance is not within specification, repair short to ground in harness between TCM and transmission connector.
  5. Measure resistance between TCM connector B54 and ground. Resistance between connector B54 terminal No. 12 and ground should be more than 100 k/ohms. If resistance is okay, go to next step. If resistance is not within specification, repair short to ground in harness between TCM and transmission connector.
    6. NOTE: All wheels must be off ground to perform following test. Speed difference between front and rear wheels during this step may cause ABS light to illuminate, but this does not indicate a malfunction. When A/T diagnosis is complete, perform ABS memory clearance procedure.
  6. Connect connectors to TCM and transmission. Raise vehicle and secure with safety stands. Start engine and set vehicle speed at 12 MPH (20 KM/H). Measure voltage between TCM connector B54 terminals. Voltage between connector B54 terminals No. 7 and No. 12 should be more than 1.0 AC volt. If voltage is not within specification, go to next step. If resistance is okay and AT OIL TEMP light illuminates, concern is intermittent and circuit has returned to normal condition. A temporary poor contact of connector or harness may be cause. Repair harness to, or connector in TCM or transmission connector.
  7. Check for poor contact in vehicle speed sensor No. 1 circuit. If contact is poor, repair as necessary. If contact is okay, replace TCM and retest.
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