Test B: Horns Inoperative In Content Theft Deterrent Alarm Mode: Testing

If theft deterrent diagnostic system check has been performed, go to next step. If theft deterrent diagnostic system check has not been performed, perform diagnostic system check before proceeding. See THEFT DETERRENT DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM.
Test theft deterrent output. See THEFT DETERRENT OUTPUTS TEST under SELF-DIAGNOSTIC SYSTEM. If horn sound, go to next step. If horn does not sound, repair horn as necessary. See STEERING COLUMN SWITCHES - CAMARO & FIREBIRD article.
Press horn switch on steering wheel pad. If horn sounds, go to next step. If horn does not sounds, repair horn as necessary. See STEERING COLUMN SWITCHES - CAMARO & FIREBIRD article.
Disconnect Body Control Module (BCM) 32-pin harness connector C3. BCM is located behind right side of instrument panel, near blower motor. See Figure. Using a jumper wire ground BCM harness connector C3 terminal C9 (Black wire). See Figure. If horn does not sound, go to next step. If horn sounds, go to step 6.
Inspect Black wire for an open or short to voltage between ground and BCM harness connector C3 terminal C9. If an open or short to voltage is not found, inspect for intermittents or poor connections. See TROUBLE SHOOTING . If an open or short to voltage is found, repair as necessary then go to step 8.
Disconnect all BCM harness connectors. Inspect for corroded or pushed out pins. Connect all BCM harness connectors. Operate system and verify if concern still exists. If concern still exists, go to next step. If concern does not exist, go to step 8. Concern may have been caused by a loose or corroded connector.
Replace BCM. Program BCM. See BODY CONTROL MODULE under PROGRAMMING. After replacement, go to next step.
Operate system to verify repair. If system is not operating correctly, repeat test beginning at step 3.