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Home >> Acura >> 2003 >> MDX Base >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Keyless/Power Door Locks/Security System >> Door Key Cylinder Switch Test
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Door Key Cylinder Switch Test

  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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