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Possible Causes

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Primary crash sensor short to ground can be caused by a short to ground in circuit No. 619 (Pink/White wire) or short to ground in ECS 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 FAULT CODES  under DIAGNOSTICS. Perform on-demand self-test. See ON-DEMAND SELF-TEST  under DIAGNOSTICS. If DTC B1914 was retrieved during on-demand self-test, fault is hard. Go to next step. If DTC B1914 was not retrieved, fault is intermittent. Go to step  4.

  2. Check primary crash sensor resistance

    Using scan tool, select PID/Data Monitor and Record. Select PID CRSHSN1. If resistance is less than 779 ohms or more than 795 ohms, go to next step. If resistance not less than 779 ohms or more than 795 ohms, replace ECS module. See ELECTRONIC CRASH SENSOR (ECS) MODULE  under REMOVAL & INSTALLATION. Go to step  5.

  3. Check primary crash sensor

    Turn ignition switch to OFF position. Access and disconnect primary crash sensor connector. See PRIMARY CRASH SENSOR  under REMOVAL & INSTALLATION. Measure resistance between component side of primary crash sensor connector terminals. If resistance is less than 779 ohms or more than 795 ohms, replace primary crash sensor and go to step  5. If resistance is not less than 779 ohms or more than 795 ohms, reconnect primary crash sensor and go to next step.

  4. Check ECS 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. Measure resistance between ground and harness side of ECS module connector terminal No. 6 (Pink/White wire). See Figure. If resistance is less than 779 ohms or more than 795 ohms, inspect all terminals, fuses, wires and connectors in circuit No. 619 (Pink/White wire) feeding terminal No. 6. See WIRING DIAGRAMS . Repair any problems found and go to next step. If resistance is not less than 779 ohms or more than 795 ohms, check for causes of intermittent short to ground in Pink/White wire. Attempt to recreate fault by flexing wire harness and cycling ignition frequently. Repair any intermittent problems found. If no intermittent problems are found, replace ECS module. 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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