DTC B2818: Low Tire Pressure System Reset Circuit Low: Testing
WARNING: This page is about a different car, the 1999 Buick Regal and 1999 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- If BCM diagnostic system check was performed, go to next step. If BCM diagnostic system check was not performed, go to BCM DIAGNOSTIC SYSTEM CHECK under SYSTEM TESTS.
- Turn ignition off. Disconnect BCM Pink 24-pin connector C2. Turn ignition on. Connect test light between BCM connector C2, terminal C10 (Light Green wire) and battery positive voltage. See WIRING DIAGRAMS . See Figure . If test light comes on, go to next step. If test light does not come on, go to step 4 .
- With test light connected as in previous step, turn ignition off. Disconnect tire inflation reset switch electrical connectors. If test light comes on, go to next step. If test light does not come on, go to step 6 .
- Turn ignition off. Reconnect all disconnected connectors and components. Turn ignition on. Using scan tool, clear DTCs. Wait 5 minutes. Recheck for DTCs. If DTC B2818 resets, go to step 7 . If DTC B2818 does not reset, go to step 8 .
- Repair short to ground in Light Green wire between tire inflation reset switch and BCM connector C2. Go to step 9 .
- Replace tire inflation reset switch. Go to step 9 .
- Replace BCM. See BODY CONTROL MODULE (BCM) under REMOVAL & INSTALLATION. Reprogram BCM. See NEW BCM SETUP under PROGRAMMING. Go to step 9 .
- System is operating properly at this time. See DIAGNOSTIC AIDS . After any repairs are made, go to next step.
- Turn ignition off. Reinstall all components and connectors. Turn ignition on. Using scan tool, clear DTCs. Check for DTCs. If any DTCs are current, perform BCM DIAGNOSTIC SYSTEM CHECK under SYSTEM TESTS. If no DTCs are current, system is operating properly.