Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CONFIRM DTC
Confirm which DTC is detected.

Is DTC B2EF0 [CIRC VOLT BELOW THRESHOLD] detected ?

YES

GO TO 2.

NO

GO TO 3.
CHARGE INTERNAL BATTERY
1. Start engine.
2. Run engine for 30 minutes to allow TCU internal battery to charge.
GO TO 3.
PERFORM DTC CONFIRMATION PROCEDURE AGAIN
Perform DTC confirmation procedure again. Refer to DTC Description .

Is DTC B2EF0 detected again?

YES

Replace TCU. Refer to Removal and Installation .

NO

Inspection End.