Body Control Module System Diagnostic System Check
WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
- Retrieve and display DTCs by entering Body Control Module (BCM) using SECURITY indicator diagnostic mode. See RETRIEVING BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODES . If diagnostic mode is entered and DTCs are retrieved, go to next step. If diagnostic mode cannot be entered, perform TEST C: CANNOT ENTER BODY CONTROL MODULE DIAGNOSTICS under SYSTEM TESTS.
- If both DTCs 12 and 55 are retrieved, go to next step. If DTCs 12 and 55 are not retrieved, perform TEST C: CANNOT ENTER BODY CONTROL MODULE DIAGNOSTICS under SYSTEM TESTS.
- If either DTC 25 or 35 are retrieved, go to next step. If both DTCs 25 and 35 are retrieved, go to step 5.
- If DTC 35 is retrieved with DTC 25, go to next step. If DTC 35 is retrieved without DTC 25, see appropriate ANTI-THEFT SYSTEMS article.
- If any other DTCs are retrieved other than DTC 12, 25/35 and 55, perform appropriate test in accordance with DTC retrieved. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no other DTCs are retrieved other than DTC 12, 25/35 and 55, perform appropriate diagnostic system check for malfunctioning system. See BODY CONTROL SYSTEM DIAGNOSTIC SYSTEM CHECK .