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Door Key Cylinder Switch Test

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
  2. Disconnect the 3P connector from the key cylinder switch.
    Fig 1: Disconnecting 3P Connector From Key Cylinder Switch
    G03642378Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Check for continuity between the terminals.
    • There should be continuity between the No. 2 and No. 3 terminals when the door key cylinder switch is in the LOCK position.
    • There should be no continuity between the No. 2 and No. 3 terminals when the door key cylinder switch is in the neutral position or UNLOCK position.
    • There should be continuity between the No. 1 and No. 2 terminals when the door key cylinder switch is in the UNLOCK position.
    • There should be no continuity between the No. 1 and No. 2 terminals when the door key cylinder switch is in the neutral position or LOCK position.
  4. If the continuity is not as specified, replace the switch.
    NOTE: Make sure the slot in the switch is properly aligned with the tab on the key cylinder.
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