LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2019 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> On-Board Diagnostic - Auto Leveling Control Module >> DTC B1D01-13: Headlight (RH) Circuit Malfunction [Auto Leveling Control Module] >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B1D01-13: Headlight (RH) Circuit Malfunction [Auto Leveling Control Module]: Notes

DTC B1D01:13 (AUTO LEVELING CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description Headlight (RH) circuit malfunction
Detection condition  
  • The auto leveling control module detected an open circuit in the headlight (RH) circuit during the headlight LO on control with the ignition switched ON (engine off or on).
Fail-safe  
  • Control of the headlight auto leveling system is continued.
Possible cause  
  • Front combination light (RH) connector or terminal malfunction
  • Auto leveling control module connector or terminal malfunction
  • Short to ground in wiring harness between auto leveling control module terminal H and front combination light (RH) terminal N
  • Open circuit in wiring harness between auto leveling control module terminal H and front combination light (RH) terminal N
  • Front combination light (RH) malfunction
  • Auto leveling control module malfunction
G13447189Courtesy of MAZDA MOTORS CORP.