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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (Air Bag Restraint Systems) >> Diagnostic Tests >> Test F: Driver Air Bag Circuit Short To Battery Or Ignition (DTC B1916) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2002 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

A driver-side air bag module circuit shorted to battery could be caused by a short to battery on Red/Orange wire (circuit No. 30S-JA8), short to battery on Black/Orange wire (circuit No. 31S-JA8), short to battery in clockspring or short to battery in 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 DIAGNOSTIC TROUBLE CODES (DTCS)  under DIAGNOSTICS. Perform on-demand self-test. See ON-DEMAND SELF-TEST  under DIAGNOSTICS. If DTC C1916 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC C1916 was not retrieved, fault is intermittent. Go to step  5 .
  2. Check driver-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. If DTC B1916 is retrieved, go to next step. If DTC B1916 is not retrieved, replace driver-side air bag module. Go to step  6 .
    NOTE: Do not remove or separate shorting bars from RCM harness connector C310A.
  3. Check air bag module circuit

    Turn ignition switch to OFF position. Disconnect driver-side air bag simulator. Access RCM and disconnect harness connector C310A. See RESTRAINTS CONTROL MODULE (RCM)  under REMOVAL & INSTALLATION. Turn ignition switch to RUN position. Measure voltage between ground and RCM harness connector C310A, terminals No. 3 (Red/Orange wire) and No. 4 (Black/Orange wire). See Figure . If voltage is more than 0.2 volt, repair short to battery on Red/Orange or Black/Orange wire and go to step  6 . If voltage is less than 0.2 volt, go to next step.
  4. Check air bag module wiring & clockspring

    Disconnect lower clockspring connector. Inspect all crimps, terminals, wires and connectors in circuit No. 30S-JA8 (Red/Orange wire) feeding RCM connector C310A, terminal No. 3. See WIRING DIAGRAMS  . Inspect all crimps, terminals, wires and connectors in circuit No. 31S-JA8 (Black/Orange wire) feeding RCM connector C310A, terminal No. 4. Inspect all crimps, terminals, wires and connectors of clockspring. Check for pinched wires and damaged connector pin terminals. If any damage is found, repair as necessary. Go to step  6 . If no damage is found, go to step  6 .
  5. Check for intermittent fault

    Turn ignition switch to OFF position. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Perform on-demand self-test. If DTC B1916 was retrieved during on-demand self-test, check for causes of intermittent fault at or near driver-side air bag module connector. Repair any intermittent faults found and go to next step. If no intermittent faults are found, go to step  3 . If DTC B1916 was not retrieved during on-demand self-test, check for causes of intermittent short to battery on Red/Orange wire or Black/Orange wires. See WIRING DIAGRAMS  . Attempt to recreate fault by flexing wire harness and cycling ignition switch frequently. Repair any intermittent problems 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 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.