NOTE During testing if DTCs other than DTC B are displayed disregard them

Diagnostic Procedure

1. Disable air bag system. See DISABLING SYSTEM under DISABLING & ACTIVATING AIR BAG SYSTEM.

2. Release shorting spring on air bag sensor assembly connector A20. 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 harness connector and air bag sensor assembly.

3. Reconnect air bag sensor assembly connector A20 (center connector) to air bag sensor assembly. 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 DTCs. See RETRIEVING CODES under DIAGNOSTICS. If DTC 53-B0105 is not displayed, go to next step. If DTC 53-B0105 is displayed, 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 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

2001 ACCESSORIES/SAFETY EQUIPMENT Toyota - Air Bag Restraint Systems ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING CODES under DIAGNOSTICS. If DTC 53-B0105 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 53-B0105 is displayed, replace passenger-side air bag module.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

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