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Home >> Chevrolet >> 2007 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 1159 (Power Seat System) >> Diagnostic Information and Procedures >> Power Seat Inoperative >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2012 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

2 Way Power Seat

  1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.
  2. Ignition OFF, test for less than 5 Ω between the ground circuit terminals listed below and ground:
    • Terminal A
    • Terminal G
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal F and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, connect the harness connector at the seat adjuster switch and disconnect the harness connector at the seat motor.
  5. Connect a test lamp between control circuit terminal A and control circuit terminal B.
  6. Ignition ON, command the seat motor in both directions using the seat adjuster switch. The test lamp should turn ON when commanding the motor in both directions.
    • If the test lamp remains OFF during either of the commands, test both control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the seat adjuster switch.
  7. If all circuits tests normal, test or replace the seat motor.

6 Way Power Seat

  1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.
  2. Ignition OFF, test for less than 5 Ω between the ground circuit terminal B and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal D and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, connect the harness connector at the seat adjuster switch and disconnect the harness connector at the appropriate seat motor.
  5. Connect a test lamp between control circuit terminal A and control circuit terminal B.
  6. Ignition ON, command the seat motor in both directions using the seat adjuster switch. The test lamp should turn ON when commanding the motor in both directions.
    • If the test lamp remains OFF during either of the commands, test both control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the seat adjuster switch.
  7. If all circuits tests normal, test or replace the appropriate seat motor.

8 Way Power Seat

  1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.
  2. Ignition OFF, test for less than 5 Ω between the ground circuit terminal B and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal E and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, connect the harness connector at the seat adjuster switch and disconnect the harness connector at the appropriate seat motor.
  5. Connect a test lamp between the appropriate control circuit terminals listed below:
    • Seat adjuster motors terminal A and terminal B
    • Seat back recline motor terminal 1 and terminal 5
  6. Ignition ON, command the seat motor in both directions using the seat adjuster switch. The test lamp should turn ON when commanding the motor in both directions.
    • If the test lamp remains OFF during either of the commands, test both control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the seat adjuster switch.
  7. If all circuits tests normal, test or replace the appropriate seat motor.
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