- The control illumination is inoperative
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- Circuitry
- Headlamp switch
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- The instrument cluster illumination is inoperative
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- Circuitry
- Instrument cluster
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- CHECK the operation of other backlighting components.
- If the other backlighting components operate correctly, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER
. TEST the system for normal operation.
- If other backlighting components are inoperative, GO to PINPOINT TEST A .
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- The instrument panel illumination does not dim
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- Circuitry
- Instrument panel dimmer switch
- Smart junction box (SJB)
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- One or more smart junction box (SJB) controlled illumination source(s) is inoperative
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