Diagnostic Procedure
- Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG SYSTEM.
- Measure resistance between ground and terminal D+ (Yellow/Black wire) of spiral cable side of spiral cable-to-air bag module connector. See Fig 1. If resistance is more than one megohm, go to next step. If resistance is less than one megohm, go to step 5).
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Reconnect air bag sensor assembly connectors. Connect jumper wire between terminal D+ (Yellow/Black wire) and terminal D- (Yellow wire) of spiral cable side of spiral cable-to-air bag module connector. Connect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES under DIAGNOSIS & TESTING. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Retrieve codes. See RETRIEVING CODES under DIAGNOSIS & TESTING. If DTC 11 is displayed, replace air bag sensor assembly. If DTC 11 is not displayed, go to next step.
- Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect spiral cable upper connector (driver-side air bag module). Reconnect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES under DIAGNOSIS & TESTING. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Retrieve codes. See RETRIEVING CODES under DIAGNOSIS & TESTING. If DTC 11 is displayed, replace driver-side air bag module. If DTC 11 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT .
- Disconnect spiral cable lower connector. Measure resistance between ground and terminal D+ (Yellow/Black wire) of spiral cable side of spiral cable-to-air bag module connector. See Fig 1. If resistance is more than one megohm, replace wiring harness between spiral cable and air bag sensor assembly. If resistance is less than one megohm, replace spiral cable.