Pinpoint Test D: All Instrument Panel Illumination Does Not Dim: Notes

Refer to SYSTEM WIRING DIAGRAMS - EXPEDITION , SYSTEM WIRING DIAGRAMS - EXPEDITION EL , SYSTEM WIRING DIAGRAMS - NAVIGATOR or SYSTEM WIRING DIAGRAMS - NAVIGATOR L article, Cluster and Panel Illumination for schematic and connector information.

NOTE: Calibrate the instrument panel dimmer switch by rotating the dimmer switch from the lowest backlighting setting to the DOME LAMP position before continuing diagnostics.