2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 65
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
B2551 STEERING LOCK UNIT
DIAGNOSIS DESCRIPTION
Though the communication between the Intelligent Key unit and the steering lock unit is normal, when the steering lock/unlock is not normal,
B2551 steering lock unit malfunction judges that it is the malfunction and displays the DTC (Diagnostic Trouble Code)
TERMINALS AND REFERENCE VALUE
Intelligent Key Unit
PDU (Power Distribution Unit)
SELF-DIAGNOSTIC LOGIC
DIAGNOSTIC PROCEDURE
1.CHECK STEERING LOCK SIGNAL
Check voltage between power distribution unit connector and ground.
