DTC 4-1 & 4-2
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.
- 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.
- 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 Fig 1 . 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 4-1 or 4-2 is indicated, go to next step. If DTC 4-1 or 4-2 is not indicated, replace passenger-side seat belt tensioner. See SEAT BELT TENSIONERS under REMOVAL & INSTALLATION.
- Disconnect right-side wire harness 2-pin connector from SRS main harness. See Fig 2 . 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 4-1 or 4-2 is indicated, go to next step. If DTC 4-1 or 4-2 is not indicated, replace right-side wire harness.
- 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 . DO NOT disconnect SRS simulator lead "C" and SRS inflator simulator from SRS main harness 2-pin connector. Measure resistance between terminals No. 5 and 12 of SRS main harness 18-pin connector. If resistance is approximately 2-3 ohms, check for poor contact at main harness 18-pin connector. If connector is okay, replace SRS unit. See SRS UNIT under REMOVAL & INSTALLATION. If resistance is not 2-3 ohms, replace SRS main harness.