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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 75 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTC 81/B1162: Short To Ground In Right-Side Head Impact Air Bag Module Squib Circuit >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Toyota Sequoia. 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. Measure resistance between ground and Yellow/Violet wire (circuit ICR+) of air bag sensor assembly side of right-side head impact air bag module squib harness connector. See WIRING DIAGRAMS . If resistance is less than one megohm, repair or replace harness or connector between right-side head impact air bag module and air bag sensor assembly. If resistance is more than one megohm, go to next step.
  3. Reconnect air bag sensor assembly connector A21 (right connector) to air bag sensor assembly. Connect jumper wire between Yellow/Violet wire (circuit ICR+) and Yellow/Orange wire (circuit ICR-) of air bag sensor assembly side of right-side head impact air bag module squib harness 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 81/B1162 is not displayed, go to next step. If DTC 81/B1162 is displayed, replace air bag sensor assembly.
  4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect right-side head impact 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 81/B1162 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 81/B1162 is displayed, replace right-side head impact air bag module.
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