Possible Causes

Low resistance in passenger-side air bag circuits may be caused by damaged shorting bar in ECS module connector or passenger-side air bag connector, short in wiring harness or short in passenger-side air bag module.

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 B1888 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1888 was not retrieved, fault is intermittent. Go to step  5 .
2. Check passenger-side air bag circuit resistance
   
   Using scan tool, select PID/Data Monitor and Record. Select PID PABAGR. If resistance is less than 1.8 ohms, go to next step. If resistance is more than 1.8 ohms, replace ECS module. See ELECTRONIC CRASH SENSOR (ECS) MODULE  under REMOVAL & INSTALLATION. Go to step  6 .
3. Check passenger-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 and perform on-demand self-test. See ON-DEMAND SELF-TEST  under DIAGNOSTICS. If DTC B1888 is received, go to next step. If DTC B1988 is not received, replace passenger-side air bag module. See PASSENGER-SIDE AIR BAG MODULE  under REMOVAL & INSTALLATION. Go to step  6 .
4. Check passenger-side air bag circuit
   
   Turn ignition switch to OFF position. Disconnect passenger-side air bag simulator from harness connector. Access and disconnect ECS module harness connector. See ELECTRONIC CRASH SENSOR (ECS) MODULE  under REMOVAL & INSTALLATION. Carefully remove shorting bar from ECS module connector terminals No. 14 and 28. See Figure . Measure resistance between Light Blue/Orange wire (circuit No. 607) and Pink/Black wire (circuit No. 616) on harness side of passenger-side harness connector. If resistance is less than 10 ohms, repair short between Light Blue/Orange wire and Pink/Black wire. Go to step  6 . If resistance is more than 10 ohms, replace ECS module. Go to step  6 .
5. Check for intermittent fault
   
   Refer to continuous DTCs recorded in step  1 . If DTC retrieved in step  1 was an intermittent fault, check for causes of intermittent low resistance in Light Blue/Orange wire (circuit No. 607) or Pink/Black wire (circuit No. 616). See WIRING DIAGRAMS  . Attempt to recreate fault by flexing wire harness and cycling ignition key frequently. Repair any intermittent problems. Go to next step. If no intermittent problems are 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.