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Home >> Ford >> 2000 >> Focus LX, Standard >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnostic Tests >> Test Ai: Right Seat Belt PRETENSIONER Circuit Short To Ground (DTC B1883) >> Possible Causes

Possible Causes

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

  1. Check right seat belt pretensioner

    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 B1883 is retrieved, go to next step. If DTC B1883 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. Repeat on-demand self-test.
  2. Check right seat belt pretensioner circuits

    Turn ignition off. Access RCM and disconnect harness connector C423. See RESTRAINTS CONTROL MODULE  under REMOVAL & INSTALLATION. Disconnect right seat belt pretensioner simulator. Turn ignition switch to RUN position. Measure resistance between ground and RCM harness connector C423, terminal No. 20 (Green/Orange wire). Measure resistance between ground and RCM harness connector C423, terminal No. 21 (Black/Red 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/Orange or Black/Red wire. Activate air bag system. See ACTIVATING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Clear DTCs. Repeat on-demand self-test.