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Home >> Mazda >> 2017 >> CX-3 Touring, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Electrical Supply Unit >> DTC B1099-11; Parking Light (RH), Taillight (LH), Rear Side Marker Light (LH), Taillight (Liftgate) (LH)/(RH) Or License Plate Light (LH)/(RH) Circuit Malfunction >> Notes

DTC B1099-11; Parking Light (RH), Taillight (LH), Rear Side Marker Light (LH), Taillight (Liftgate) (LH)/(RH) Or License Plate Light (LH)/(RH) Circuit Malfunction: Notes

DTC B1099-11; PARKING LIGHT (RH), TAILLIGHT (LH), REAR SIDE MARKER LIGHT (LH), TAILLIGHT (LIFTGATE) (LH)/(RH) OR LICENSE PLATE LIGHT (LH)/(RH) CIRCUIT MALFUNCTION - DETECTION CONDITION & POSSIBLE CAUSE

Description Parking light (RH), taillight (LH), rear side marker light (LH), taillight (liftgate) (LH)/(RH) or license plate light (LH)/(RH) circuit malfunction
Detection condition
  • The electrical supply unit (ESU) detects a short to ground in the parking light (RH), taillight (LH), rear side maker light (LH), taillight (liftgate) (LH)/(RH) or license plate light (LH)/(RH) circuit.
Fail-safe Not applicable
Possible cause
  • Electrical supply unit (ESU) connector or terminal malfunction
  • Parking light bulb (RH) malfunction
  • Front combination light (RH) connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
    • Front combination light (RH) terminal C-Electrical supply unit (ESU) terminal 4G (With front combination light (bulb type))
    • Front combination light (RH) terminal D-Electrical supply unit (ESU) terminal 4G (With front combination light (LED type))
  • Front combination light (RH) malfunction
  • Taillight bulb (LH) malfunction
  • Rear side marker light bulb (LH) malfunction
  • License plate light bulb (LH) malfunction
  • License plate light bulb (RH) malfunction
  • Taillight (LH) connector or terminal malfunction
  • Rear side marker light (LH) connector or terminal malfunction
  • Taillight (liftgate light) (LH) connector or terminal malfunction
  • Taillight (liftgate light) (RH) connector or terminal malfunction
  • License plate light (LH) connector or terminal malfunction
  • License plate light (RH) connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
    • Taillight (LH) terminal C-Electrical supply unit (ESU) terminal 1D
    • Rear side marker light (LH) terminal D-Electrical supply unit (ESU) terminal 1D
    • License plate light (LH) terminal A-Electrical supply unit (ESU) terminal 1D
    • License plate light (RH) terminal A-Electrical supply unit (ESU) terminal 1D
    • Taillight (liftgate light) (LH) terminal A-Electrical supply unit (ESU) terminal 1D
    • Taillight (liftgate light) (RH) terminal A-Electrical supply unit (ESU) terminal 1D
  • Taillight (liftgate light) (LH) malfunction
  • Taillight (liftgate light) (RH) malfunction
  • Rear combination light (LH) malfunction
  • Electrical supply unit (ESU) malfunction
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