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Home >> Oldsmobile >> 1998 >> Bravada >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnosis & Testing >> DTC B2527: Front FOGLIGHT Circuit Low >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform TBC module diagnostic system check. See procedures in TBC MODULE DIAGNOSTIC SYSTEM CHECK  . After performing system check, go to next step.
  2. Disconnect Purple TBC module harness connector. Disconnect front foglight switch connector. Check resistance between ground and Purple TBC module harness connector terminal No. B5 (Orange wire). If resistance is infinite, go to next step. If resistance is not infinite, go to step 6).
  3. DO NOT depress foglight switch button. Check resistance between foglight switch terminals "D" (Black wire) and "E" (Orange wire). If resistance is infinite, go to next step. If resistance is not infinite, go to step 7).
  4. Clear DTCs. Turn ignition off for 10 seconds. Turn ignition switch to RUN position for 3.5 minutes. Check DTCs. If DTC B2527 is set as a current code, go to next step. If DTC B2527 is not set as a current code, DTC is intermittent. See DIAGNOSTIC AIDS.
  5. Replace TBC module. Program TBC and perform relearn procedure. See procedures in TBC MODULE PROGRAMMING/RPO CONFIGURATION  and TBC/BCM RELEARN PROCEDURE  . After programming module, go to step 8).
  6. Repair short to ground in Orange wire. After repairs, go to step 8).
  7. Replace front foglight switch. After repairs, go to next step.
  8. Clear DTCs. After clearing DTCs, perform TBC module diagnostic system check. See TBC MODULE DIAGNOSTIC SYSTEM CHECK  .
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