2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 75
OK or NG
OK - Check the condition of harness and connector. If it is
OK, check the self-diagnosis results using CONSULT-III again.
NG - Replace push-button ignition switch.
B2557
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
B2557 VEHICLE SPEED
DIAGNOSIS DESCRIPTION
B2557 vehicle speed signal compares the vehicle speed input from the unified meter and A/C amp. and ABS via CAN communication and the
vehicle signal (8 pulses) from the unified meter and A/C amp. If there is the difference between each vehicle speed input, it judges that it is the
malfunction and displays the DTC (Diagnostic Trouble Code).
TERMINALS AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT
SELF-DIAGNOSTIC LOGIC
DIAGNOSTIC PROCEDURE
1.CHECK VEHICLE SPEED SIGNAL
Check the signal between Intelligent Key unit connector and ground.
