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

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Diagnostic Procedure

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

2. Measure resistance between ground and passenger-side air bag module harness connector Yellow/Red wire (circuit P+). See WIRING DIAGRAMS . 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. If resistance is more than one megohm, go to next step.

3. Reconnect air bag sensor assembly connector A20 (center connector) to air bag sensor assembly. Connect jumper wire between passenger-side air bag module harness connector Yellow/Red wire (circuit P+) and

2004 ACCESSORIES/SAFETY EQUIPMENT Toyota - Air Bag Restraint Systems

Yellow/Green wire (circuit P-). 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 51/B0107 is not displayed, go to next step. If DTC 51/B0107 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 ignition switch to ON position. Wait at least 20 seconds. Retrieve DTCs. See RETRIEVING CODES under DIAGNOSTICS. If DTC 51/B0107 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 51/B0107 is displayed, replace passenger-side air bag module.

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