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DTC B2585: Parking Light System Fault: Testing

  1. If body function controller (BFC) diagnostic system check has been performed, go to next step. If body function controller (BFC) diagnostic system check has not been performed, go toBODY FUNCTION CONTROLLER (BFC) DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS.
  2. If no other ALC DTCs exist, go to next step. If any other ALC DTCs exist, repair those DTCs first.
  3. Turn parking lights on. If all parking lights illuminate, go to next step. If all parking lights do not illuminate, go to step  5 .
  4. Toggle parking lights on and off. Using scan tool, read BFC INPUT for PARK LAMP INPUT. If scan tool display toggles, go to step  12 . If scan tool display does not toggle, go to next step.
  5. If scan tool displays INACTIVE while parking lights are toggled on and off, go to next step. If scan tool does not display INACTIVE while parking lights are toggled on and off, go to step  7 .
  6. Locate and repair problem in audible warning system. See appropriate wiring diagram in WARNING SYSTEMS article. After repairs, go to step  12 .
  7. Disconnect right I/P junction block Gray 30-pin connector C2 terminal C10 (Brown wire). Disconnect BFC Gray 24-pin connector C2 terminal B8 (Brown wire). Using DVOM, measure resistance between right I/P junction block connector C2 terminal C10 (Brown wire) and BFC connector C2 terminal B8 (Brown wire). See Figure . If resistance is 0-2 ohms, go to next step. If resistance is not 0-2 ohms, go to step  9 .
  8. Using DVOM, measure resistance between right I/P junction block connector C2 terminal C10 (Brown wire) and ground. If continuity is not indicated, go to step  11 . If continuity is indicated, go to step  10 .
  9. Repair open in Brown wire between BFC and right I/P junction block. After repairs, go to step  12 .
  10. Repair short to ground in Brown wire between BFC and right I/P junction block. After repairs, go to step  12 .
  11. Replace BFC. See BODY FUNCTION CONTROLLER (BFC)  under REMOVAL & INSTALLATION. After repairs, go to next step.
  12. Reconnect all disconnected components and connectors. Clear DTCs. Perform BODY FUNCTION CONTROLLER (BFC) DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS.
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