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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Air Bag Restraint Systems >> Diagnostic Tests >> Test B: RCM Internal Fault (DTC B1342) >> Possible Causes

Possible Causes

An RCM internal fault could be caused by improperly operating accelerometer, back-up power supply, internal module circuit fault or microcontroller RAM/ROM/EEPROM failure.

  1. Check for hard or intermittent DTC

    Ensure ignition is off. Connect NGS tester to DLC. See USING NGS TESTER  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 B1342 was retrieved during on-demand self-test, fault is hard. Replace RCM and go to next step. See RESTRAINTS CONTROL MODULE  under REMOVAL & INSTALLATION. If DTC B1342 was not retrieved, fault is intermittent. Replace RCM and go to next step.

  2. 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. The RCM will also display a Light Fault Code (LFC) on the AIR BAG warning light. If no continuous DTCs were retrieved, clear all DTCs. See CLEARING FAULT CODES  under DIAGNOSTICS.
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