Possible Causes

High resistance in passenger-side air bag circuit can be caused by poor connection or corrosion in passenger-side air bag module circuits, open circuit or high resistance in wiring harness or open circuit or high resistance 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 B1933 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1933 was not retrieved, fault is intermittent. Go to step  5 .
2. Check passenger-side air bag circuit
   
   Using scan tool, select PID/Data Monitor and Record. Select PID PABAGR. If resistance is more than 3 ohms, go to next step. If resistance is less than 3 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. Perform on-demand self-test. See ON-DEMAND SELF-TEST  under DIAGNOSTICS. If DTC B1933 is received, go to step  4 . If DTC B1933 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
   
   Access and disconnect ECS module harness connector. See ELECTRONIC CRASH SENSOR (ECS) MODULE  under REMOVAL & INSTALLATION. Disconnect passenger-side air bag simulator from harness connector. Carefully remove shorting bar from ECS module connector terminals No. 14 and 28. See Figure . Measure resistance of Light Blue/Orange wire (circuit No. 607) between ECS module connector terminal No. 14 and passenger-side air bag connector. Measure resistance of Pink/Black wire (circuit No. 616) between ECS module connector terminal No. 28 and passenger-side air bag connector. If resistance is more than one ohm, repair open in Light Blue/Orange or Pink/Black wire. Go to step  6 . If resistance is less than one ohm, check for causes of intermittent high resistance. Attempt to recreate hard fault by flexing wire harness and cycling ignition key. Repair any intermittent problems found. If no intermittent problems are found, 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 high resistance or open in Light Blue/Orange or Pink/Black wire. 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.