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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnostic Tests >> Test Aa: Left Side Crash Sensor Mounting Fault (DTC B2441) >> Possible Causes

Possible Causes

A left side crash sensor mounting failure could be caused by damaged wiring, damaged left side crash sensor, corrosion or dirt on sensor mounting surface or an RCM internal fault.

  1. Check for hard or intermittent DTC

    Ensure ignition is off. Connect scan tool to 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 B2441 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B2441 was not retrieved, fault is intermittent. Go to step  3 .

  2. Check side crash sensor mounting

    Turn ignition off. Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Access left side crash sensor. See SIDE CRASH SENSOR  under REMOVAL & INSTALLATION. Measure resistance between known-good ground and sensor mounting bolt. If resistance is less than 10 k/ohms, replace left side crash sensor. Go to step  4 . If resistance is more than 10 k/ohms, repair high resistance to ground at left side crash sensor mounting. Go to step  4 .

  3. Check for intermittent fault

    Refer to continuous DTCs recorded in step  1 . If DTC retrieved in step  1 was a intermittent fault, check for cause of intermittent sensor mounting failure. 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 a intermittent fault, go to next step.

  4. 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 IDENTIFICATION  table. If no DTCs were retrieved, reconnect air bag system. Activate air bag system. See ACTIVATING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Prove out system. Clear all DTCs. See CLEARING FAULT CODES  under DIAGNOSTICS.
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