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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 109 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Test C: 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 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

A driver-side air bag circuit short to battery or ignition voltage could be caused by a short to battery or ignition voltage in Gray/Orange wire (circuit No. 614), short to battery or ignition voltage in Gray/White wire, (circuit No. 615) short to battery or ignition voltage in clockspring, short to battery or ignition voltage in air bag module or RCM internal fault.

  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 FAULT CODES  under DIAGNOSTICS. Perform on-demand self-test. See ON-DEMAND SELF-TEST  under DIAGNOSTICS. If DTC B1916 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1916 was not retrieved, fault is intermittent. Go to step  5 .
  2. Check driver-side air bag module

    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 B1916 is retrieved, go to next step. If DTC B1916 is not retrieved, replace driver-side air bag module. See DRIVER-SIDE AIR BAG MODULE  under REMOVAL & INSTALLATION. Go to step  6 .
    NOTE: Do not remove or separate shorting bars from RCM harness connector C2041A.
  3. Check driver-side air bag circuit

    Turn ignition switch to OFF position. Disconnect driver-side air bag simulator from harness connector. Access RCM and disconnect harness connector C2041A. See RESTRAINTS CONTROL MODULE (RCM)  under REMOVAL & INSTALLATION. Turn ignition switch to RUN position. Measure voltage between ground and harness side of RCM connector C2041A, terminal No. 3 (Gray/Orange wire). See Figure . Measure voltage between ground and harness side of RCM connector C2041A, terminal No. 4 (Gray/White wire). If voltage is less than 0.2 volt in both circuits, replace RCM. Go to step  6 . If voltage is more than 0.2 volt in either circuit, go to next step.
  4. Check driver-side air bag wiring & clockspring

    Disconnect lower clockspring connector located at base of steering column. Inspect all crimps, terminals, fuses, wires and connectors feeding RCM harness connector C2041A, terminals No. 3 (Gray/Orange wire) and No. 4 (Gray/White wire), clockspring and clockspring connectors. See WIRING DIAGRAMS  . Also, check for pinched wires and damaged connector terminals. If any damage is found, repair or replace as necessary. Go to step  6 . If no damage is found, go to step  6 .
  5. 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 short to battery or ignition voltage in Gray/Orange wire, Gray/White wire and clockspring assembly. 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. If DTC retrieved in step  1 was not an intermittent fault, 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. DO NOT clear any DTCs until all DTCs have been resolved. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION  table. 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.