2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 69
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 - Repair or replace harness.
B2552
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
B2552 INTELLIGENT KEY
DIAGNOSIS DESCRIPTION
B2552 Intelligent Key unit internal malfunction judges NG by self-detecting the Intelligent Key unit internal malfunction.
If this DTC (Diagnostic Trouble Code) is displayed, replace the Intelligent Key unit and perform the specified registration procedure. Refer to the
Technical Bulletin.
B2553
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
B2553 IGN POWER CIRCUIT
DIAGNOSIS DESCRIPTION
Though the power supply switching control to ON position by push-button ignition switch operation is performed normally, if there is no ON
power supply input to the Intelligent Key unit, B2553 ignition power supply system judges it is the malfunction and displays the DTC (Diagnostic
Trouble Code)
TERMINAL AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT
CONSULT-III DATA MONITOR STANDARD VALUE
SELF-DIAGNOSTIC LOGIC
DIAGNOSTIC PROCEDURE
1.CHECK POWER SUPPLY CIRCUIT
With CONSULT-III
Check ("IGN ON SW") in DATA MONITOR mode with CONSULT-III.
When ignition switch is turned to ON
