2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 83
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
B2563 HI VOLTAGE
DIAGNOSIS DESCRIPTION
B2563 battery high voltage monitors the battery voltage input to Intelligent Key unit. When the condition that the voltage is 18V or more is
detected for 90 seconds or more, it judges that it is the malfunction and displays the DTC (Diagnostic Trouble Code)
TERMINAL AND REFERENCE VALUE FOR INTELLIGENT KEY UNIT
Standard is the measured voltage between each terminal and ground
SELF-DIAGNOSTIC LOGIC
DIAGNOSTIC PROCEDURE
1.CHECK POWER SUPPLY CIRCUIT
1. Start engine.
2. Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK - Check the condition of harness and connector. If it is
