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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 211 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTC 53/B0105: Short In Passenger-Side Air Bag Squib Circuit >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Lexus LS 430. 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.
  2. Release shorting spring on air bag sensor assembly connector A24 (center connector). See RELEASING SHORTING SPRING  under DIAGNOSTICS. Measure resistance between Yellow/Red wire (circuit P+) and Yellow/Green wire (circuit P-) on air bag sensor assembly side of passenger-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 passenger-side air bag module and air bag sensor assembly.
  3. Reconnect air bag sensor assembly connector A24 to air bag sensor assembly. Connect jumper wire between Yellow/Red wire (circuit P+) and Yellow/Green wire (circuit P-) on air bag sensor assembly side of passenger-side air bag module harness 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 DIAGNOSTICS. 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 DTCs. See RETRIEVING CODES  under DIAGNOSTICS. If DTC 53/B0105 is not retrieved, go to next step. If DTC 53/B0105 is retrieved, replace air bag sensor assembly.
  4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect passenger-side 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. 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 DTCs. If DTC 53/B0105 is not retrieved, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 53/B0105 is retrieved, replace passenger-side air bag module.
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