FixVault

Stoplight Switch

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the connector.
  2. Check for continuity between the terminals of the switch.
    TERMINAL CONNECTOR SPECIFIED CONDITION CHART

    MEASUREMENT CONDITIONS TERMINAL CONNECTOR OF TESTER SPECIFIED CONDITION
    When brake pedal is depressed. (for stoplight circuit) 1 - 2 Less than 2 ohms
    3 - 4 Open circuit
    When brake pedal is not depressed. (for auto-cruise control circuit) 1 - 2 Open circuit
    3 - 4 Less than 2 ohms
    Fig 1: Disconnecting Connector
    G04539463Courtesy of DAIMLERCHRYSLER CORPORATION