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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (Air Bag Restraint Systems) >> Diagnostic Tests >> Test N: Left Front Belt & Buckle Assembly PRETENSIONER Circuit Resistance Out Of Range (DTC B1230) >> Possible Causes

Possible Causes

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High or low resistance may be caused by damaged wiring on circuit No. 1079 (Light Green/Red wire) or No. 1080 (Light Green/Black wire) or damaged left front belt and buckle assembly pretensioner.

  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 B1230 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1230 was not retrieved, fault is intermittent. Go to step  5.

  2. Check driver belt & buckle assembly pretensioner

    Using scan tool, select PID/Data Monitor and Record. Select PIN DPRTNR. If resistance is less than 1.8 ohms or more than 3 ohms, go to next step. If resistance is not less than 1.8 ohms or more than 3 ohms, replace ECS module. See ELECTRONIC CRASH SENSOR (ECS) MODULE  under REMOVAL & INSTALLATION. Go to step  5.

  3. Check left front belt & buckle pretensioner circuit

    Disable air bag system. See DISABLING SYSTEM  under DISABLING & ACTIVATING AIR BAG SYSTEM. Access and disconnect ECS module harness connector. See ELECTRONIC CRASH SENSOR (ECS) MODULE  under REMOVAL & INSTALLATION. Access and disconnect left front belt and buckle assembly pretensioner connector. See BELT & BUCKLE ASSEMBLY PRETENSIONER  under REMOVAL & INSTALLATION. Measure resistance in Light Green/Red wire between harness side of ECS module connector terminal No. 24 and harness side of left front belt and buckle assembly pretensioner connector. Measure resistance in Light Green/Black wire between harness side of ECS module connector terminal No. 25 and harness side of left front belt and buckle assembly pretensioner connector. If resistance is more than 0.5 ohm in either circuit, repair open in appropriate wire. See WIRING DIAGRAMS . Go to next step. If resistance is less than 0.5 ohm in both circuits, replace left front belt and buckle assembly pretensioner. Go to next step.

  4. Check left front belt & buckle pretensioner circuit for short

    Measure resistance between Light Green/Red wire and Light Green/Black wire on harness side of left front belt and buckle assembly pretensioner connector. If resistance is less than one megohm, repair short between Light Green/Red wire and Light Green/Black wire. Go to next step. If resistance is more than one megohm, replace left front belt and buckle assembly pretensioner. Go to next step.

  5. 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 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.
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