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Steering Column Lock Malfunction

NOTE: Use this test procedure when STEERING COLUMN LOCK message is displayed or steering column does not lock or unlock.
  1. Perform BCM DIAGNOSTIC SYSTEM CHECK in BODY CONTROL MODULE article.
  2. Using scan tool, retrieve BCM DTCs. If steering column DTC B2587, B2588, B2592 or B2593 are stored, perform BCM DIAGNOSTIC SYSTEM CHECK in BODY CONTROL MODULE article.
  3. If steering column connector C207 was disconnected with ignition on, go to step 16). See WIRING DIAGRAMS . If connector C207 was not disconnected, go to next step.
  4. Turn ignition on. Using scan tool, check BCM steering column lock state. If display is ENABLE STDBY, go to step 7). If display is not ENABLE STDBY, go to next step.
  5. Turn ignition off. Using scan tool, check BCM Key In Ignition status with key in the ignition. Display should read ACTIVE. Check BCM Key In Ignition status with key out of ignition. Display should read INACTIVE. If display is correct, go to next step. If display is not as specified, diagnose and repair Key In Ignition circuits between ignition switch and BCM. See WIRING DIAGRAMS .
  6. Disconnect steering column connector C207. Using scan tool, check BCM Key Out Of Ignition status with key in ignition. Display should read INACTIVE. Check BCM Key Out Of Ignition status with key out of ignition. Display should read ACTIVE. If display is correct, go to step 8). If display is not as specified, go to step 11).
  7. Using test light connected to battery voltage, probe harness connector C207 terminal "A". If test light illuminates, go to next step. If test light does not illuminate, go to step 10).
  8. Remove key from ignition switch. Connect test light between harness connector C207 terminal "C" and terminal "D". Using scan tool, cycle steering column lock/unlock motor. If test light illuminates in both lock and unlock positions, go to step 13). If light did not illuminate in both positions, go to step 12).
  9. Check for open or short to ground in Light Green wire between steering wheel lock connector C207 terminal "B" and BCM connector C2 terminal C15. If an open or short was found, repair as necessary and go to step 16). If no problem was found, go to step 13).
  10. Repair open circuit in Black wire between steering wheel lock connector C207 terminal "A" and ground. Go to step 16).
  11. Check for open in Tan wire between BCM connector C3 terminal B8 and ignition switch connector C2 terminal "D". If an open was found, repair as necessary and go to step 16). If no problem was found, go to step 14).
  12. Check for an open or short to ground in Orange wire between steering wheel lock connector C207 terminal "D" and BCM connector C3 terminal A8. Check for an open or short to ground in Purple wire between steering wheel lock connector C207 terminal "C" and BCM connector C3 terminal A6. If an open or short was found, repair as necessary and go to step 16). If no problem was found, go to step 15).
  13. Replace steering column lock motor. Go to step 16).
  14. Replace ignition lock cylinder. Go to step 16).
  15. Replace BCM. Program BCM. See PROGRAMMING . Go to step 16).
  16. Turn ignition off. Disconnect BCM fuse No. 25 for 15 seconds to clear BCM steering column fail enable mode. Reinstall and reconnect components and connectors. Turn ignition on. Clear DTCs. Perform BCM DIAGNOSTIC SYSTEM CHECK in BODY CONTROL MODULE article.
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