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DTC B2253: Right Key Cylinder Switch Fault: Testing

WARNING: This page is about a different car, the 2000 Chevrolet Corvette and 1999 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. If power door systems diagnostic system check has been performed, go to next step. If power door systems diagnostic system check has not been performed, go to POWER DOOR SYSTEMS DIAGNOSTIC SYSTEM CHECK  .
  2. Using scan tool, monitor RDCM inputs. Display DOOR KEY UNLOCK SWITCH status. If scan tool indicates DOOR KEY UNLOCK SWITCH status as INACTIVE, go to next step. If scan tool does not indicate DOOR KEY UNLOCK status as INACTIVE, go to step  4 .
  3. Insert key and rotate door lock key switch to UNLOCK. Monitor scan tool. If DOOR KEY UNLOCK SWITCH status does not change when switch is rotated, go to next step. If DOOR KEY UNLOCK SWITCH status changes when switch is rotated, go to DIAGNOSTIC AIDS  .
  4. Turn ignition off. Remove door panel. Disconnect right door key switch connector. Monitor DOOR KEY UNLOCK SWITCH status. If scan tool does not indicate DOOR KEY UNLOCK SWITCH status as INACTIVE, go to next step. If scan tool indicates DOOR KEY UNLOCK SWITCH status as INACTIVE, go to step  7 .
  5. Check for short to ground in Light Green wire between RDCM connector C1 terminal No. 13 and right door key switch. See Figure . If faulty circuit is found and repaired, go to step  10 . If circuit is okay, go to next step.
  6. Check for intermittent connections at RDCM. If connections are okay, go to step  8 . If faulty connections are found and repaired, go to step  10 .
  7. Check for intermittent connections at right door key switch. If connections are okay, go to step  9 . If faulty connections are found and repaired, go to step  10 .
  8. Replace RDCM. See DOOR CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to step  10 .
  9. Replace right door key switch. See DOOR LOCK CYLINDER  under REMOVAL & INSTALLATION. After repairs, go to next step.
  10. Turn ignition off. Reconnect all disconnected components and connectors. Turn ignition on. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Recheck system operation. Recheck for DTCs. If DTC resets, go to step  2 . If DTC does not reset, repair is complete.
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