DTC No. P30FE-64 RMCU is staying protected because of BCM

DTC SET CONDITION

Check Condition

The power supply mode of the electric motor switch is ON (READY indicator: ON).

Judgment Criterion

Authentication error (BCM) is detected.

TROUBLESHOOTING HINTS

Inappropriate key registration operation
Malfunction of the keyless operation system
Malfunction of the engine control module (ECM)
Malfunction of the power drive unit
Malfunction of the rear motor (malfunction of the REMCU)

caution

The DTC may be set when the 12V battery is removed.

DIAGNOSIS

Required Special Tools:

MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
MB992745: V.C.I.-Lite main harness A
MB992747: V.C.I.-Lite USB cable short
MB992748: V.C.I.-Lite USB cable long
MB991223: Wiring harness set
MB992006: Extra fine probe

1.M.U.T.-IIISE other system DTC

Check whether the other system sets the following DTCs.

Engine control module (ECM)

DTC No. P161D-64 Matching error with BCM

Power drive unit

DTC No. P3084-64 PDU is staying protected because of BCM

Is the DTC set?

When all the DTCs are set, go to

2.M.U.T.-IIISE other system DTC

Check whether the keyless operation system sets the following DTCs.

KOS

DTC No. B2010-1C Battery voltage

Is the DTC set?

Troubleshoot the set DTCs (Refer to Diagnosis Procedure

3.Check the 12 V power supply voltage of the KOS-ECU.

(1) Disconnect the KOS-ECU connector, and measure at the wiring harness side.

(2) Check the voltage between the KOS-ECU connector (terminal No. 20) and body ground.

OK: Battery voltage

Is the check result normal?

Repair or replace the faulty part.

4.Check whether the DTC is set again.

Is the DTC set?

Replace the rear motor assembly (Refer to MOTOR (ELECTRIC MOTOR UNIT) REMOVAL AND INSTALLATION

The trouble can be an intermittent malfunction (Refer to General Information - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS