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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Instrument Cluster Illumination & Instrument Panel Illumination) >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Principles of Operation >> Fault Management

Fault Management

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

The SJB defaults the dimmable backlighting to full intensity if the instrument panel dimmer switch or circuitry fails.

The IC and the ACM default to full nighttime brightness if they receive a missing or invalid backlighting message from the SJB.

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