DTC B3031: Key Decoder Device In Learn Mode: Testing
WARNING: This page is about a different car, the 1999 Pontiac Grand Am and 1999 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If circuit is shorted to ground, fuse will blow. Check fuse before performing diagnostics.
- Perform THEFT DETERRENT DIAGNOSTIC SYSTEM CHECK under SYSTEM TESTS. Go to next step.
- Using scan tool, place BCM in auto learn mode. Go to next step.
- Read DTCs with scan tool. If any DTC are set or reset, go to next step. If DTCs have not reset, go to step 6 .
- Repair appropriate DTC. See BCM DTC DEFINITIONS table under SELF-DIAGNOSTIC SYSTEM. If repair is complete, go to step 6 . If repair is not complete, go to next step.
- Replace BCM. See BODY CONTROL MODULE under REMOVAL & INSTALLATION. After repairs, go to next step.
- Using scan tool, clear DTCs. Go to THEFT DETERRENT DIAGNOSTIC SYSTEM CHECK under SYSTEM TESTS.