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Home >> Lincoln >> 2011 >> MKS EcoBoost >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Information Center - Instrumentation, Message Center, And Warning Chimes >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test AK: The Headlamps On Warning Chime Is Inoperative >> Normal Operation

Normal Operation

The Smart Junction Box (SJB) receives the headlamp switch status from the headlamp switch. On vehicles equipped without Intelligent Access (IA), the SJB receives the LH front door ajar status from the LH front door ajar switch through hardwired circuitry. On vehicles equipped with IA, the Remote Function Actuator (RFA) module receives the LH front door ajar status from the LH front door ajar switch through hardwired circuitry.

The headlamps on warning chime sounds when the LH front door is opened with the ignition switch in the OFF position, no key-in-ignition input, and the headlamp switch is in the PARKING LAMP or HEADLAMP ON position. The SJB communicates the headlamp on chime request to the Instrument Panel Cluster (IPC) over the Medium Speed Controller Area Network (MS-CAN) communication bus. The autolamps feature must not be selected for the headlamps on warning chime to operate.

This pinpoint test is intended to diagnose the following: 

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