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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (Power Seat System) >> Diagnostic Information and Procedures >> Power Seat Inoperative (w/o Memory-A45) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the harness connector at the seat adjuster switch.
  2. Test for less than 1 ohm of resistance between the ground circuit terminal B and ground.
    • If greater than 1 ohm, test the ground circuit for an open/high resistance.
  3. Verify that a test lamp illuminates between the B+ circuit terminal and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. Connect the harness connector at the seat adjuster switch.
  5. Disconnect the harness connector at the appropriate seat motor assembly.
  6. Connect a test lamp between the motor control circuit terminals for the inoperative motor.
  7. Verify that the test lamp illuminates while pressing the appropriate seat switch in both directions.
    • If the test lamp does not illuminate for both directions, test the motor circuits for a short to ground or an open/high resistance. If the circuits test normal replace the seat adjuster switch.
  8. If the circuits test normal replace the inoperative motor assembly.
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