Possible Causes

Right seat belt pretensioner low circuit resistance could be caused by short in wiring harness, low resistance in right seat belt pretensioner, or damaged or inoperative RCM.

1. Check right seat belt pretensioner
   
   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 B1886 is retrieved, go to next step. If DTC B1886 is not retrieved, replace right seat belt pretensioner. See SEAT BELT PRETENSIONER  under REMOVAL & INSTALLATION. Activate air bag system. See ACTIVATING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear DTCs. See CLEARING FAULT CODES  under DIAGNOSTICS. Repeat on-demand self-test.
2. Check right seat belt pretensioner circuits
   
   Turn ignition switch to OFF position. Access RCM and disconnect harness connector C423. See RESTRAINTS CONTROL MODULE (RCM)  under REMOVAL & INSTALLATION. Disconnect right seat belt pretensioner simulator. Turn ignition switch to RUN position. Measure resistance between RCM harness connector C423, terminals No. 20 (Green-Orange wire) and No. 21 (Black-Red wire). See Figure. If resistance is more than 10 k-ohms, replace RCM. Activate air bag system. Clear DTCs. Repeat on-demand self-test. If resistance is less than 10 k-ohms, repair short in Green-Orange and Black-Red wires. See WIRING DIAGRAMS . Activate air bag system. Clear DTCs. Repeat on-demand self-test.