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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1485 (Information Center - Instrumentation, Message Center And Warning Chimes) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test BA: The Headlamps On Warning Chime Is Inoperative >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The Smart Junction Box (SJB) receives the headlamp switch status from the headlamp switch. The SJB  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 PARK 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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