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Home >> Ford >> 2011 >> Taurus Limited, AWD >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Instrument Cluster Illumination And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test B: All Dimmable Switch Illumination Is Inoperative >> Normal Operation

Normal Operation

When the parking lamps are on, the Smart Junction Box (SJB) sends a Pulse Width Modulated (PWM) voltage to the hardwired dimmable illumination sources based on the input received from the instrument panel dimmer switch.

DTC Description Fault Trigger Conditions
  • B106E - Solid State Driver Disabled Due to Short Circuit
 A continuous DTC that sets when the SJB has temporarily shut down the output driver. The module has temporarily disabled the backlighting output because an excessive current draw exists (such as a short to ground). The SJB cannot enable the backlighting output until the cause of the short is corrected, the DTCs have been cleared and a successful self-test is run  .
  • B106F - Module Disabled Due to External Fault
 A continuous DTC that sets when the SJB has permanently shut down the output driver. The module has permanently disabled the backlighting output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the SJB can withstand. The cause of the excessive current draw MUST be corrected before a new SJB is installed  .
  • B2A32 - LED Backlighting Output Circuit Open
 An on-demand DTC that sets when the SJB detects an open from the backlighting output circuit.
  • B2A33 - LED Backlighting Output Circuit Short To Ground
 A continuous and on-demand DTC that sets when the SJB detects a short to ground from the backlighting output circuit. The DTC also sets when fuse 10 (15A) has failed or is removed

This pinpoint test is intended to diagnose the following: 

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