Possible Causes

Passenger-side air bag circuit resistance low or shorted together could be caused by Green/White and Black/White wires shorted to ground or together, short to ground in passenger-side air bag module, or damaged or inoperative RCM.

1. Check passenger-side air bag module
   
   Turn ignition off. 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 B1888 is retrieved, go to next step. If DTC B1888 is not retrieved, replace passenger-side air bag module. Activate air bag system. See ACTIVATING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear DTCs. Repeat on-demand self-test.
2. Check passenger-side air bag module wiring
   
   Turn ignition off. Access RCM and disconnect harness connector C424. See RESTRAINTS CONTROL MODULE  under REMOVAL & INSTALLATION. Measure resistance between ground and RCM harness connector C424, terminal No. 5 (Green/White wire). Measure resistance between ground and RCM harness connector C424, terminal No. 6 (Black/White wire). See Figure. If resistance is more than 10 k/ohms, replace RCM. Activate air bag system. See ACTIVATING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear DTCs. Repeat on-demand self-test. If resistance is less than 10 k/ohms, repair short to ground in Green/White or Black/White wire. Activate air bag system. See ACTIVATING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear DTCs. Repeat on-demand self-test.