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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 262 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTC 14/B0101: Open In Driver-Side Air Bag Module Squib Circuit >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Toyota Matrix and 2004 Toyota Corolla. 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 driver-side air bag module and disconnect spiral cable harness connectors from air bag module. See DUAL-STAGE DRIVER-SIDE AIR BAG MODULE  under REMOVAL & INSTALLATION. Access air bag sensor assembly and disconnect harness connector A13. See AIR BAG SENSOR ASSEMBLY  under REMOVAL & INSTALLATION. See Figure. Measure resistance between Yellow/Black wire and Yellow wire on spiral cable side of Orange 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 connector A13. Connect jumper wire between Yellow/Black wire and Yellow wire on spiral cable side of Orange 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 CODES  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 codes. See RETRIEVING CODES  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 upper spiral cable connectors (to driver-side air bag module). Reconnect negative battery cable. Wait at least 2 seconds. Turn ignition switch to ON position. Wait at least 20 seconds. Clear DTCs. See CLEARING CODES  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 codes. See RETRIEVING CODES  under DIAGNOSTICS. 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 connector. Measure resistance between Yellow/Black wire and Yellow wire on air bag sensor 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 spiral cable side of Orange upper spiral cable connector. If resistance 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. See AIR BAG WARNING LIGHT INTERMITTENT .
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