LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2007 >> M35 Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Exterior Body Panels >> Body, Lock & Security System >> Intelligent Key System/Engine Start Function >> DTC B2551: Steering Lock Unit >> Terminals And Reference Value >> Self-Diagnostic Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Self-Diagnostic Logic

SELF-DIAGNOSTIC LOGIC

DTC Self-diagnosis name DTC detecting condition Possible causes
B2551 STEERING LOCK UNIT Though the communication between the Intelligent Key and the steering lock unit is normal, the steering lock unit condition signal is NG
  • Harness and connector (Open or shorted in the circuit between the units)
  • Steering lock unit