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Home >> Suzuki >> 2007 >> Aerio Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Security And Locks) >> Diagnostic Information and Procedures >> Power Door Locks Inoperative >> Circuit / System Testing >> Door Lock Switch Malfunction

Door Lock Switch Malfunction

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the appropriate door lock switch.
  2. Ignition OFF, test for less than 1.0 Ω for resistance between the ground circuit terminal C and ground.
    • If greater than the specified range, test the ground circuit for an open / high resistance.
  3. Ignition ON, verify the scan tool Lock Sw parameter is Inactive.
    • If not the specified value, test the signal circuit terminal L for a short to ground. If the circuit tests normal, replace the BCM.
  4. Verify the scan tool Unlock Sw parameter is Inactive.
    • If not the specified value, test the signal circuit terminal U for a short to ground. If the circuit tests normal, replace the BCM.
  5. Install a 3 amp fused jumper wire between the signal circuit terminal U and ground. Verify the scan tool Door Unlock Sw parameter is Active.
    • If not the specified value, test the signal circuit for a short to voltage or an open / high resistance. If the circuit tests normal, replace the BCM.
  6. Install a 3 amp fused jumper wire between the signal circuit terminal L and ground. Verify the scan tool Lock Sw parameter is Active.
    • If not the specified value, test the signal circuit for a short to voltage or an open / high resistance. If the circuit tests normal, replace the BCM.
  7. If all circuits test normal, test or replace the appropriate door lock switch.
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