LEMON Manuals: Even more car manuals for everyone
Home >> Oldsmobile >> 1998 >> Cutlass Base >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnostic Tests >> DTC B2575: ALC Headlight System Fault >> Diagnostic Aids

Diagnostic Aids

  1. Turn ignition switch to RUN position. Cover ambient light sensor for 30 seconds. Low beams should illuminate. If low beams do not illuminate, see WIRING DIAGRAMS  .
  2. Turn ignition switch to RUN position. Turn high beams on. Cover ambient light sensor for 30 seconds. High beams should illuminate. If high beams do not illuminate, see WIRING DIAGRAMS  .
  3. If only history DTC B2575 is set, problem may be intermittent. Try to recreate fault by wiggling wiring and connectors while performing test.


  1. Turn ignition switch to RUN position. Cover ambient light sensor for 30 seconds. Low beams should illuminate. If low beams do not illuminate, see WIRING DIAGRAMS  .
  2. Turn ignition switch to RUN position. Turn high beams on. Cover ambient light sensor for 30 seconds. High beams should illuminate. If high beams do not illuminate, see WIRING DIAGRAMS  .
  3. If only history DTC B2575 is set, problem may be intermittent. Try to recreate fault by wiggling wiring and connectors while performing test.
scientia non olet · About LEMON Manuals