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Home >> Toyota >> 2003 >> RAV4 Base, AWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTC B0101/14: Open In Driver-Side Air Bag Module Squib Circuit >> Diagnostic Procedure
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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.
  1. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Access air bag sensor assembly and disconnect center harness connector. See AIR BAG SENSOR ASSEMBLY  under REMOVAL & INSTALLATION. Remove driver-side air bag module. See DUAL-STAGE DRIVER-SIDE AIR BAG MODULE  under REMOVAL & INSTALLATION. Measure resistance between Yellow/Black wire and Yellow wire on harness side of upper spiral cable connector. See WIRING DIAGRAMS . If resistance is more than one ohm, go to step  4. If resistance is less than one ohm, go to next step.
  2. Connect air bag sensor assembly center connector. Connect jumper wire between Yellow/Black wire and Yellow wire on harness side of upper spiral cable 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 14/B0101 is displayed, replace air bag sensor assembly. If DTC 14/B0101 is not displayed, go to next step.
  3. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect driver-side air bag module connector to upper spiral cable connector. Reconnect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. If DTC 14/B0101 is displayed, replace driver-side air bag module. If DTC 14/B0101 is not displayed, the system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT .
  4. Disconnect lower spiral cable harness connector. Measure resistance between Yellow/Black wire and Yellow wire on harness side of lower spiral cable connector. If resistance is more than one ohm, replace wiring harness between air bag sensor assembly and spiral cable. If resistance is less than one ohm, go to next step.
  5. Measure resistance between Yellow/Black wire and Yellow wire on harness side of upper spiral cable connector. If resistance is more than one ohm, replace spiral cable. See SPIRAL CABLE  under REMOVAL & INSTALLATION. If resistance is less than one ohm, system is functioning properly at this time. Check for intermittent fault.
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