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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1114 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test C: DTC B1868 - Lamp Air Bag Warning Indicator Circuit Failure >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

During normal operation, the air bag warning indicator will illuminate continuously for approximately 6 seconds and then go out after the ignition switch is placed in the ON position and no air bag fault exists. Control of the air bag warning indicator is a function of the instrument cluster module based on information it receives from the restraints control module (RCM) over the high-speed controller area network (HS-CAN). The default mode for the air bag warning indicator is on. The RCM sends a message to the instrument cluster module to turn the indicator off if no air bag fault exists. If the RCM detects a problem with the supplemental restraints system (SRS) it will send a message to the instrument cluster module to turn the air bag warning indicator on.

If the instrument cluster module detects a problem with the air bag warning indicator it will send a fault message to the RCM and the RCM will store diagnostic trouble code (DTC) B1868 in memory.

This pinpoint test is intended to diagnose the following:

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