Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSINFINITI2015Q60 BASE, 2D CONVERTIBLEREPAIR AND DIAGNOSISELECTRICALBODY ELECTRICALPOWER CONTROL SYSTEM (POWER DISTRIBUTION SYSTEM) (CONVERTIBLE)DTC/CIRCUIT DIAGNOSISDTC B2618: BCMDTC LOGICDTC DETECTION LOGIC

2015 Infiniti Q60 Base, 2D Convertible

DTC Detection Logic

2015 Infiniti Q60 Base, 2D ConvertibleSECTION DTC Detection Logic

NOTE:

If DTC B2618 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to DTC LOGIC .
If DTC B2618 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to DTC LOGIC .

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
B2618	BCM	An immediate operation of ignition relay (IPDM E/R) is requested by BCM, but there is no response for more than 1 second	BCM

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.