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Home >> Ford >> 2002 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2466 (Instrument Cluster System And Panel Illumination -- F250-F550 Super Duty) >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test B: The Control Illumination Is Always On - All Hardwired Illumination >> Normal Operation

Normal Operation

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The smart junction box (SJB) then supplies a pulse-width modulated (PWM) voltage signal to the dimmable illumination sources on circuit VLN04 (VT/GY).

DTC B2A32 (LED backlighting output circuit open) - is an on-demand DTC that sets when the SJB detects a short to voltage on the LED backlighting output circuit. The DTC also sets as a result when fuse 10 (15A) has failed or is removed.

This pinpoint test is intended to diagnose the following:

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