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Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B3225 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the driver door latch assembly.
  2. Test for less than 5.0 ohms of resistance between the lock control circuit terminal 3 and ground.
    • If greater than the specified range, test the lock control circuit for a short to voltage or an open/high resistance. If circuits test normal, replace the DDM.
  3. Test for less than 5.0 ohms of resistance between the unlock control circuit terminal 2 and ground.
    • If greater than the specified range, test the unlock control circuit for a short to voltage or an open/high resistance. If circuits test normal, replace the DDM.
  4. Connect a test lamp between the lock control circuit terminal 3 and unlock control circuit terminal 2.
  5. Perform the DOOR LOCK/UNLOCK test with a scan tool. The test lamp should turn ON when performing the DOOR LOCK/UNLOCK test.
    • If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, replace the DDM.
  6. If the circuits test normal, test or replace the driver door latch assembly.
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