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Home >> Saab >> 2008 >> 9-7X 4.2i >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Shift Lock Control >> Diagnostic Information and Procedures >> Transmission Control Lever Malfunction >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the stop lamp switch.
  2. Ignition ON, vehicle in PARK, verify that a test lamp illuminates between the control circuit terminal F and ground.
    • If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance.
  3. Ignition OFF, connect the harness connector at the stop lamp switch. Disconnect the harness connector at the automatic transmission shift lock actuator.
  4. Ignition OFF, test for less than 1.0 ohm between the ground circuit terminal A and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  5. Ignition ON, verify that a test lamp illuminates between the control circuit terminal B and ground.
    • If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance.
  6. With the brake pedal pressed, verify that a test lamp illuminates between the control circuit terminal E and ground.
    • If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit test normal, test or replace the stop lamp switch.
  7. With the brake pedal released, verify that a test lamp does not illuminate between the control circuit terminal E and ground.
    • If the test lamp illuminates, test the control circuit for a short to voltage.
  8. If all circuits test normal, test or replace the automatic transmission shift lock actuator.
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