LEMON Manuals: Even more car manuals for everyone
Home >> Oldsmobile >> 1998 >> Bravada >> Repair and Diagnosis (Single Page) >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnosis & Testing >> DTC B2617: Courtesy Light 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. Ensure DTC B2617 is set as a current code, dome light dimmer is not in full UP position, dome/interior lights override switch is on, doors are closed for 45 seconds and to remain closed for this test. Using scan tool, monitor courtesy light relay input. turn ignition switch to RUN position. If scan tool displays that courtesy light relay input as ACTIVE, go to next step. If scan tool does not display ACTIVE, DTC is intermittent. See DIAGNOSTIC AIDS.
  3. Turn ignition off. Remove courtesy light relay from BBEC. Ensure doors has been closed for 45 seconds and remains closed for this test. Disconnect Light Blue TBC module harness connector. Check resistance between BBEC cavity for courtesy light relay circuit No. 690 (Gray/Black wire) and TBC module harness connector circuit No. 690 (Gray/Black wire). If circuit is shorted to ground, go to step 7). If circuit is not shorted to ground, go to step 6).
  4. Turn ignition off. Reconnect all components and wiring. Turn ignition switch to RUN position. Clear DTCs. Turn ignition off for 10 seconds. Turn ignition switch to RUN position. Turn dimmer switch to ON position. Check if DTC B2617 is set as a current code. If code is set as current, go to next step. If code is not set as current, problem is intermittent. See DIAGNOSTIC AIDS.
  5. Reconnect all components and wiring. Replace TBC module. Program TBC and perform relearn procedure. See TBC MODULE PROGRAMMING/RPO CONFIGURATION  and TBC/BCM RELEARN PROCEDURE. After programming module, go to step 9).
  6. Check resistance between courtesy light relay terminals No. 2 and 3. If continuity is present, go to step 8). If continuity is not present, go to step 4).
  7. Repair short to ground or open in circuit No. 690 (Gray/Black wire). After repairs, go to step 9).
  8. Replace courtesy light relay. After replacing relay, go to next step.
  9. Clear DTCs. After clearing DTCs, perform TBC module diagnostic system check. See TBC MODULE DIAGNOSTIC SYSTEM CHECK  .
scientia non olet · About LEMON Manuals