Possible Causes

Passenger-side air bag low resistance could be caused by short in wiring harness or low resistance in air bag module.

1. Check for hard or intermittent DTC
   
   Ensure ignition is off. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). See USING NGS TESTER  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 B1935 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1935 was not retrieved, fault is intermittent. Go to step  4 .
2. Check passenger-side air bag
   
   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 B1935 is retrieved, go to next step. If DTC B1935 is not retrieved, replace passenger-side air bag module. Go to step  5 .
   NOTE: By disconnecting air bag simulator, passenger-side air bag module circuit will be measured in series with high resistance dummy squib inside ECS module.
3. Check passenger-side air bag circuit
   
   Turn ignition switch to OFF position. Disconnect passenger-side air bag simulator. Zero ohmmeter. Measure resistance between Yellow/Red and Red wires of passenger-side air bag module harness connector. If resistance is less than 10 k/ohms, repair low resistance in Yellow/Red and/or Red wires as necessary. Go to step  5 . If resistance is more than 10 k/ohms, replace ECS module. See ELECTRONIC CRASH SENSOR (ECS) MODULE  under REMOVAL & INSTALLATION. Go to step  5 .
4. Check for intermittent fault
   
   Refer to continuous DTCs recorded in step  1 . If DTC retrieved in step  1 was an intermittent fault, check for cause of intermittent low resistance on Yellow/Red wire and Red wire. Attempt to recreate fault by driving vehicle, flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems found. Go to next step. If DTC retrieved in step  1 was not an intermittent fault, go to next step.
5. 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.