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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (Air Bag Restraint Systems) >> Diagnostic Tests >> DTC 13/B0100: Short In Driver-Side Air Bag Module Squib Circuit >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Toyota Sienna. 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 mechanism on air bag sensor assembly connector C5 (center connector). See RELEASING SHORTING SPRING  under DIAGNOSTICS. Measure resistance between Yellow/Black wire (terminal D+) and Yellow wire (terminal D-) of spiral cable side of upper spiral cable connector. If resistance is less than one megohm, go to step  5. If resistance is more than one megohm, go to next step.
  3. Connect air bag sensor assembly connector C5. 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 13/B0100 is displayed, replace air bag sensor assembly. If DTC 13/B0100 is not displayed, go to next step.
  4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect upper spiral cable connector to driver-side air bag module. Reconnect 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 13/B0100 is displayed, replace driver-side air bag module. If DTC 13/B0100 is not displayed, the system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT .
  5. Disconnect lower spiral cable connector. Release shorting spring on spiral cable side of lower spiral cable connector. See RELEASING SHORTING SPRING  under DIAGNOSTICS. Measure resistance between Yellow/Black wire (terminal D+) and Yellow wire (terminal D-) of spiral cable side of upper spiral cable connector. If resistance is less than one megohm, replace spiral cable. If resistance is more than one megohm, go to next step.
  6. Release shorting spring on air bag sensor assembly connector C5. See RELEASING SHORTING SPRING  under DIAGNOSTICS. Measure resistance between Yellow/Black wire (terminal D+) and Yellow wire (terminal D-) of air bag sensor assembly side of lower spiral cable connector. If resistance less than one megohm, replace harness between air bag sensor assembly and spiral cable. If resistance is more than one megohm, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT .
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