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Home >> Mercury >> 2005 >> Montego Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Test >> Pinpoint Test E: The Control Illumination Is Always On >> Testing

Pinpoint Test E: The Control Illumination Is Always On: Testing

  1. E1 CHECK THE EXTERIOR LIGHTING 
    • Key in OFF position.
    • Observe the exterior lighting components.
    • Are any exterior lighting components illuminated? 
    • Yes  : REFER to EXTERIOR LIGHTING to continue diagnosis of the exterior lighting.
    • No  : GO to E2.
  2. E2 CHECK THE SJB 
    • Disconnect: Smart Junction Box (SJB) C2280d.
    • Do the dimmable backlighted components continue to illuminate? 
    • Yes  : REPAIR circuit 1417 (LG/RD) or circuit 1418 (LB/WH) as necessary. TEST the system for normal operation.
    • No  : GO to E3.
  3. E3 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all the SJB connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
    • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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