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Home >> Oldsmobile >> 1999 >> Intrigue GX, 3.5 H >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> Diagnostic Tests >> DTC B0608: BCM Power Malfunction >> Testing

DTC B0608: BCM Power Malfunction: Testing

  1. Perform BCM DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS. Go to next step.
  2. Check CRANK SIGNAL fuse (10-amp) located in fuse block. Fuse block is located on right end of instrument panel near door. If fuse is blown, go to next step. If fuse is okay, go to step  4 .
  3. Turn ignition switch to LOCK position. Replace CRANK SIGNAL fuse. Turn ignition switch to START position (engine may start). Recheck condition of CRANK SIGNAL fuse. If fuse is blown, go to step  13 . If fuse is okay, go to next step.
  4. Check IGN 0 fuse (10-amp) located in fuse block. If fuse is blown, go to next step. If fuse is okay, go to step  6 .
  5. Turn ignition switch to LOCK position. Replace IGN 0 fuse. Turn ignition switch to RUN position. Recheck condition of IGN 0 fuse. If fuse is blown, go to step  14 . If fuse is okay, go to next step.
  6. Turn ignition switch to LOCK position. Using a test light connected to ground, backprobe BCM connector C1 terminal C12 (Pink wire). See Figure . If test light does not come on, go to next step. If test light comes on, go to step  15 .
  7. With test light connected as in previous step, turn ignition switch to RUN and START positions (engine may start). Turn ignition switch to LOCK position. If test light comes on in RUN and START positions, go to next step. If test light does not come on in RUN and START positions, go to step  16 .
  8. Turn ignition switch to LOCK position. With test light connected to ground, backprobe BCM connector C1 terminal C13 (Purple wire). If test light comes on, go to next step. If test light does not come on, go to step  17 .
  9. With test light connected as in previous step, turn ignition switch to RUN and START positions (engine may start). Turn ignition switch to LOCK position. If test light comes on in RUN and START positions, go to next step. If test light does not come on in RUN and START positions, go to step  18 .
  10. Turn ignition switch to LOCK position. With test light connected to ground, backprobe BCM connector C1 terminal C3 (Purple wire). If test light comes on, go to next step. If test light does not come on, go to step  19 .
  11. With test light connected as in previous step, turn ignition switch to ACC, RUN and START positions (engine may start). Turn ignition switch to LOCK position. If test light comes on in ACC, RUN and START positions, go to next step. If test light does not come on in ACC, RUN and START positions, go to step  20 .
  12. Turn ignition switch to RUN position. Using scan tool, clear BCM DTCs. Turn ignition switch to LOCK position. Wait 10 seconds. Turn ignition switch to RUN position. Recheck for BCM DTCs. If DTC B0605 resets as current, go to step  21 . If BCM DTC B0605 does not reset as current, go to step  22 .
  13. Repair short to ground in Purple wire between BCM connector C1 terminal C13 and CRANK SIGNAL fuse in fuse block. After repairs, go to step  23 .
  14. Repair short to ground in Purple wire between BCM connector C1 terminal C3 and IGN 0 fuse in fuse block. After repairs, go to step  23 .
  15. Repair short to voltage in Pink wire between BCM connector C1 terminal C12 and PCM-BCM fuse in fuse block. After repairs, go to step  23 .
  16. Repair poor connection or open in Pink wire between BCM connector C1 terminal C12 and PCM-BCM fuse in fuse block. After repairs, go to step  23 .
  17. Repair short to voltage in Purple wire between BCM connector C1 terminal C13 and CRANK SIGNAL fuse in fuse block. After repairs, go to step  23 .
  18. Repair poor connection or open in Purple wire between BCM connector C1 terminal C13 and CRANK SIGNAL fuse in fuse block. After repairs, go to step  23 .
  19. Repair short to voltage in Purple wire between BCM connector C1 terminal C3 and IGN 0 fuse in fuse block. After repairs, go to step  23 .
  20. Repair poor connection or open in Purple wire between BCM connector C1 terminal C3 and IGN 0 fuse in fuse block. After repairs, go to step  23 .
  21. Check for poor connections at BCM connector C1 terminals C3, C12 and C13. If connections are okay, replace BCM. See BODY CONTROL MODULE (BCM)  under REMOVAL & INSTALLATION. Perform new BCM setup. See NEW BCM SETUP  under PROGRAMMING. After programming BCM, go to step  23 .
  22. Symptom is not present at this time. See DIAGNOSTIC AIDS  for additional diagnostic information.
  23. Turn ignition switch to LOCK position. Reinstall all components and connectors. Turn ignition switch to RUN position. Using scan tool, clear DTCs. Check for DTCs. If any DTCs are current, perform BCM DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS. If no DTCs are current, system is operating properly.
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