LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2000 >> 4Runner Base, 4WD >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Air Bag Restraint Systems >> Diagnostic Tests >> DTC 74-B0136: Open In Driver-Side Seat Belt PRETENSIONER Squib Circuit >> Diagnostic Procedure

Diagnostic Procedure

  1. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM.
  2. Measure resistance between Yellow-Black wire (circuit PL+) and Yellow wire (circuit PL-) of air bag sensor assembly side of driver-side seat belt pretensioner squib harness connector. See WIRING DIAGRAMS . If resistance is more than one ohm, repair or replace harness or connector between seat belt pretensioner and air bag sensor assembly. If resistance is less than one ohm, go to next step.
  3. Reconnect air bag sensor assembly connector C20 (left connector) to air bag sensor assembly. Connect jumper wire between Yellow-Black wire (circuit PL+) and Yellow wire (circuit PL-) of air bag sensor assembly side of driver-side seat belt pretensioner squib 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 74-B0136 is not displayed, go to next step. If DTC 74-B0136 is displayed, replace air bag sensor assembly.
  4. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect driver-side seat belt pretensioner 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 74-B0136 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT . If DTC 74-B0136 is displayed, replace driver-side seat belt pretensioner.
scientia non olet · About LEMON Manuals