Diagnostic Procedure
WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
- Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG SYSTEM. Access air bag sensor assembly and disconnect right harness connector. See AIR BAG SENSOR ASSEMBLY under REMOVAL & INSTALLATION. Access right side air bag module and disconnect harness connector. See SIDE AIR BAG MODULE under REMOVAL & INSTALLATION. Release short spring on air bag sensor assembly right connector. See RELEASING SHORTING SPRING under DIAGNOSTICS. Measure resistance between Yellow/Red wire and Yellow/Green wire on harness side of right side air bag module harness connector. See WIRING DIAGRAMS . If resistance is more than one megohm, go to next step. If resistance is less than one megohm, repair or replace harness or connector between right side air bag module and air bag sensor assembly.
- Reconnect air bag sensor assembly right harness connector. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING DTCS under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING DTCS under DIAGNOSTICS. If DTC 43/B0110 is not displayed, go to next step. If DTC 43/B0110 is displayed, replace air bag sensor assembly.
- Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect right side air bag module harness connector. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING DTCS under DIAGNOSTICS. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING DTCS under DIAGNOSTICS. If DTC 43/B0110 is not displayed, system is functioning properly at this time. Check for intermittent air bag system fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 43/B0110 is displayed, replace right side air bag module.