DTC No. U3D1-06 Logical Block - Algorithm Based Failure

DTC No. U3D01-06 Logical Block - Algorithm Based Failure

DTC SET CONDITION

Check Condition

The power supply mode of the electric motor switch is ON.

Judgment Criterion

Algorithm error of the PHEV-ECU (Failed PHEV-ECU update)
Failure on microcomputer is detected.

TROUBLESHOOTING HINTS

Failed update data
Updating PHEV-ECU using the wrong update data
Malfunction of the PHEV-ECU
Low 12V battery voltage

note	When the 12V battery voltage is dropped to the level that the jump-start is necessary, this DTC may be set.

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

1.Check whether the DTC is set again.

Is the DTC No. U3D01-06 set?

Update the ECU again. Then,

note	When the ECU update data cannot be selected, go to Step 2.

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

2.Check whether the DTC is set again.

Is the DTC No. U3D01-06 set?

Perform "Compulsion Boot Test" in "Special function" of PHEV-ECU (Refer to SPECIAL FUNCTION

). Then go to

Item No. 1: Compulsion Boot Test Request

The procedure is complete.

3.Check whether the DTC is set again.

Is the DTC No. U3D01-06 set?

Replace the PHEV-ECU (Refer to PHEV-ECU REMOVAL AND INSTALLATION

The procedure is complete.