LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1221 (Lighting Systems) >> Diagnostic Information & Procedures >> DTC B2625 >> Circuit/System Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the affected component.
  2. Connect a test lamp between the listed LED dimming control circuit terminal and ground.
    • IP multifunction switch X88/Z88 w/UD7/XA7 terminal 8
    • IP multifunction switch Z75 w/UD7 terminal 4
    • IP multifunction switch Z75 w/XA7 terminal 7
    • 4wd mode switch terminal 4
  3. Command the dimming test high to low with a scan tool. The test lamp should turn from bright to dim when changing between the commanded states.
    • If the test lamp is always off, test the control circuit for an open/high resistance or short to ground. If the circuit tests normal, replace the BCM.
    • If the test lamp is always bright, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
  4. If all circuits test normal, test or replace the affected component.
scientia non olet · About LEMON Manuals