Possible Causes

A driver-side air bag ignitor circuit shorted to ground could be caused by short to ground in Gray/Orange wire (circuit No. 614), short to ground Gray/White wire (circuit No. 615), short to ground in clockspring, short to ground in driver-side air bag module or faulty RCM.

1. Check for hard or intermittent DTC
   
   Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See USING SCAN TOOL  under DIAGNOSTICS. Turn ignition switch to RUN position. Retrieve and record any continuous DTCs. See RETRIEVING FAULT CODES  under DIAGNOSTICS. Perform on-demand self-test. See ON-DEMAND SELF-TEST  under DIAGNOSTICS. If DTC B1887 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1887 was not retrieved, fault is intermittent. Go to step  5.
2. Check driver-side air bag module
   
   Turn ignition switch to OFF position. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Turn ignition switch to RUN position. Perform on-demand self-test. If DTC B1887 is retrieved, go to next step. If DTC B1887 is not retrieved, replace driver-side air bag module. See DRIVER-SIDE AIR BAG MODULE  under REMOVAL & INSTALLATION. Go to step  6.
   NOTE: Do not remove or separate shorting bars from RCM harness connector.
3. Check driver-side air bag circuit
   
   Turn ignition switch to OFF position. Access RCM and disconnect harness connector. See RESTRAINTS CONTROL MODULE (RCM)  under REMOVAL & INSTALLATION. Measure resistance between harness side of RCM connector terminals No. 3 (Gray/Orange wire) and No. 21 (Black/Orange wire, circuit No. 649). See Figure. If resistance is less than 10 k/ohms, go to next step. If resistance is more than 10 k/ohms, replace RCM. Go to step  6.
4. Check driver-side air bag wiring & clockspring
   
   Disconnect driver-side air bag simulator from harness connector. Disconnect lower clockspring connector located on base of steering column. Inspect all crimps, terminals, fuses, wires and connectors feeding RCM harness connector terminals No. 3 (Gray/Orange wire) and No. 4 (Gray/White wire), clockspring and clockspring connectors. See WIRING DIAGRAMS . Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step  6. If no damage is found, go to step  6.
5. Check for intermittent fault
   
   Turn ignition switch to OFF position. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Perform on-demand self-test. If DTC B1887 was retrieved during on-demand self-test, check for cause of intermittent faults at or near driver-side air bag module harness connector. Repair any intermittent faults found. If intermittent faults are found and corrected, go to next step. If intermittent faults are not found, go to step  2. If DTC B1887 was not retrieved during on-demand self-test, fault is intermittent. Check for cause of intermittent short to ground in Gray/Orange and/or Gray/White wire(s). See WIRING DIAGRAMS . Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step.
6. Check for additional DTCs
   
   Refer to continuous DTCs recorded in step  1. If any continuous DTCs were retrieved, go to diagnostic trouble code identification table for direction to appropriate test. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION  table. DO NOT clear any DTCs until all DTCs have been resolved. If no continuous DTCs were retrieved, reconnect air bag system. Activate air bag system. See ACTIVATING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear all DTCs. See CLEARING FAULT CODES  under DIAGNOSTICS.