54Dd-DTC U1100: PHEV-ECU MESSAGE LOST (OBC)

DTC U1100: PHEV-ECU Message Lost (OBC)

MONITOR EXECUTION

Continuous

MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC set in memory for the item monitored below)

Not applicable

Sensor (The sensor below is determined to be normal)

Not applicable

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions

OBC power supply voltage is 10 volts to 16 volts.

Judgment Criterion

Unable to receive PHEV-ECU signals through the CAN bus line for 2.5 seconds

OBD-II DRIVE CYCLE PATTERN

Refer to OBD-II Drive Cycle - Pattern 1 .

FAIL-SAFE AND BACKUP FUNCTION

The charge is stopped.
The output of DC-DC converter continues.

PROBABLE CAUSES

The CAN bus is failed.
The PHEV-ECU is failed.
The on board charger/DC-DC converter is failed.

DIAGNOSIS

STEP 1. Using scan tool (M.U.T.-IIISE), diagnose CAN bus line.

Diagnose CAN bus line.

Is the CAN bus line normal?

Go to Step 2

Repair CAN bus line (Refer to GROUP 54C - Troubleshooting - CAN Bus Diagnostics Table

STEP 2. Using scan tool (M.U.T.-IIISE), check whether the others DTC is set.

Check that the other ECU performing CAN communication with PHEV-ECU set DTC U1100 [Refer to GROUP 54C - CAN Communication-related Diagnosis Code (U-code) Table

Is the DTC set?

Replace the PHEV-ECU (Refer to GROUP 54Da - PHEV-ECU

). Then go to Step 4

Go to Step 3

STEP 3. Test the OBD-II drive cycle.

(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle - Pattern 1

(2) Check the DTC.

Is the DTC set?

Replace the on board charger/DC-DC converter (Refer to

). Then go to Step 4

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions

STEP 4. Test the OBD-II drive cycle.

(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle - Pattern 1

(2) Check the DTC.

Is the DTC set?

Retry the troubleshooting.

The inspection is complete.