LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1138 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2615 >> Circuit/System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. With a scan tool clear the DTC.
  2. Ignition OFF, disconnect the harness connectors at the following components:
    • Courtesy/reading lamp - left front
    • Courtesy/reading lamp - left rear
    • Courtesy/reading lamp - right front
    • Courtesy/reading lamp - right rear
    • Courtesy lamp - rear compartment
    • I/P compartment lamp
    • LH I/P courtesy lamp
    • LH vanity mirror
    • RH vanity mirror
  3. Operate the vehicle within the conditions for running the DTC and verify the DTC does not reset.
    • If the DTC resets, test the courtesy lamps voltage supply circuit for a short to voltage, short to ground, or an open/high resistance. If the circuits test normal, replace the BCM.
  4. Reconnect each component one at a time and verify that the DTC does not reset as current.
    • If the DTC resets as current, test or replace the component responsible for setting the DTC.
scientia non olet · About LEMON Manuals