LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnostic Tests >> Test S: Driver Air Bag Squib No. 1 Circuit Open (DTC B1932) >> Possible Causes

Possible Causes

Driver-side air bag squib No. 1 circuit open could be caused by open circuit or high resistance in wiring harness, open or high resistance in air bag module or an internal RCM 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 B1932 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1932 was not retrieved, fault is intermittent. Go to step  4 .

  2. Check driver-side air bag

    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. If DTC B1932 is retrieved, go to next step. If DTC B1932 is not retrieved, go to step  4 .
    CAUTION: DO NOT remove or separate shorting bars from RCM harness connector.
    NOTE: An extremely low resistance is expected for the following test. Zero ohmmeter before taking measurement.

  3. Check for open in circuit

    Turn ignition off. Access RCM and disconnect harness connector C310A. See RESTRAINTS CONTROL MODULE  under REMOVAL & INSTALLATION. Disconnect air bag simulator from lower clock spring harness connector. Measure resistance between Gray/White and Gray/Orange wires on vehicle harness side of lower clock spring connector. If resistance is more than 1.5 ohms, repair high resistance in Gray/White and/or Gray/Orange wires. Go to step  6 . If resistance is less than 1.5 ohms, replace RCM. Go to step  6 .
    CAUTION: DO NOT remove or separate shorting bars from RCM harness connector.
    NOTE: An extremely low resistance is expected for the following test. Zero ohmmeter before taking measurement.

  4. Check for open in clockspring

    Turn ignition off. Disconnect driver-side air bag module connector (upper clockspring connector). Remove air bag simulator from lower clockspring connector and reconnect lower clockspring connector. Measure resistance between Gray/White and Gray/Orange wires on vehicle harness side of upper clock spring connector. If resistance is more than 1.5 ohms, repair high resistance in Gray/White and/or Gray/Orange wires. Go to step  6 . If resistance is less than 1.5 ohms, replace driver-side air bag module. Go to step  6 .

  5. 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 high or low resistance on Gray/White wire, Gray/Orange wire and clockspring. 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.

  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 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.
scientia non olet · About LEMON Manuals