DTC 2-4

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.

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 off. Disconnect battery cables. Wait at least 3 minutes. Disconnect passenger-side air bag 2-pin connector from SRS main harness. See Figure . Connect SRS Simulator Lead "C" (07TAZ-SZ5011A) and SRS Inflator Simulator (07SAZ-TB4011A) to SRS main harness 2-pin connector. DO NOT disconnect driver-side air bag 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 2-4 is indicated, go to next step. If DTC 2-4 is not indicated, replace passenger-side air bag assembly. See AIR BAG ASSEMBLIES under REMOVAL & INSTALLATION.
Disconnect battery cables. Wait at least 3 minutes. Disable driver-side air bag and both seat belt tensioners. See DISABLING & ACTIVATING AIR BAG SYSTEM . Disconnect SRS main harness 18-pin connector from SRS unit. See Figure . Disconnect SRS Simulator Lead "C" (07TAZ-SZ5011A) and SRS Inflator Simulator (07SAZ-TB4011A) from SRS main harness 2-pin connector. Reconnect battery cables. Turn ignition on and measure voltage between terminal No. 10 of SRS main harness 18-pin connector and ground, and between terminal No. 14 of SRS main harness 18-pin connector and ground. If voltage is 0.5 volt or less, replace SRS unit. See SRS UNIT under REMOVAL & INSTALLATION. If voltage is greater than 0.5 volt, replace SRS main harness.