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DTC 4-4

WARNING: Whenever ignition is on, or has been turned off for less than 3 minutes, be careful not to bump SRS unit. Air bags could accidentally deploy and cause damage or injury.
  1. Before proceeding, See AIR BAG SAFETY PRECAUTIONS  . Erase DTC memory. See ERASING DIAGNOSTIC TROUBLE CODE MEMORY  under DIAGNOSTICS. Turn ignition on. If indicator light stays on, go to next step. If light goes off after about 6 seconds, system is okay at this time. See TROUBLESHOOTING INTERMITTENT FAILURES  under DIAGNOSTICS.
  2. Turn ignition switch off. Disconnect battery cables, and wait 3 minutes. Disconnect passenger-side seat belt tensioner 2-pin connector from right-side wire harness. See Figure . DO NOT disconnect driver-side seat belt tensioner connector. Connect SRS Simulator Lead "C" (07TAZ-SZ5011A) and SRS Inflator Simulator (07SAZ-TB4011A) to right-side wire harness 2-pin connector. Reconnect battery cables. Erase DTC memory. See ERASING DIAGNOSTIC TROUBLE CODE MEMORY  under DIAGNOSTICS. Read DTC. See DIAGNOSTIC TROUBLE CODE (DTC)  under DIAGNOSTICS. If DTC 4-4 is indicated, go to next step. If DTC 4-4 is not indicated, replace passenger-side seat belt tensioner. See SEAT BELT TENSIONERS  under REMOVAL & INSTALLATION.
  3. Disconnect right-side wire harness 2-pin connector from SRS main harness. See Figure . Connect SRS simulator lead "C" and SRS inflator simulator to SRS main harness 2-pin connector. Erase DTC memory. See ERASING DIAGNOSTIC TROUBLE CODE MEMORY  under DIAGNOSTICS. Read DTC. See DIAGNOSTIC TROUBLE CODE (DTC)  under DIAGNOSTICS. If DTC 4-4 is indicated, go to next step. If DTC 4-4 is not indicated, replace right-side wire harness.
  4. Disconnect battery cables, and wait 3 minutes. Disable both air bags and driver-side seat belt tensioner. See DISABLING & ACTIVATING AIR BAG SYSTEM  . Disconnect SRS main harness 18-pin connector from SRS unit. See Figure . Disconnect SRS simulator lead "C" and SRS inflator simulator from SRS main harness 2-pin connector. Reconnect battery cables. Connect a voltmeter between terminal No. 5 of SRS main harness 18-pin connector and ground. Turn ignition switch on, and measure voltage. Connect a voltmeter between terminal No. 12 of SRS main harness 18-pin connector and ground, and measure voltage. If voltages are greater than 0.5 volt, replace SRS main harness. If voltages are 0.5 volt or less, replace SRS unit. See SRS UNIT  under REMOVAL & INSTALLATION.
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