Code No.U1113 EV Remote CAN timeout



caution
  • If diagnosis code No. U1113 is stored, be sure to diagnose the CAN bus line.
  • When replacing the CAN box unit, always check that the communication circuit is normal.

DIAGNOSTIC FUNCTION


If the signal from EV remote-ECU cannot be received, the CAN box unit stores the diagnosis code No. U1113.

JUDGEMENT CRITERIA


With the statuses that the electric motor switch is at ON position, system voltage is 10 - 16 V (data from ETACS-ECU), and there is no malfunction to the power supply fuse (IOD fuse), or odometer value is 80.5 km or more, if the communication with KOS-ECU cannot be established for 2,500 ms or more, the CAN box unit determines that a problem has occurred.

PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III CAN bus diagnostics


Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 2

Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).

STEP 2. M.U.T.-III other system diagnosis code


Check if diagnosis code is stored in the EV remote-ECU.

Q. Is the diagnosis code stored?

Troubleshoot the EV remote-ECU (Refer to ), and then go to Step 3.

Go to Step 3

STEP 3. Check the M.U.T.-III Diagnosis code for other systems


Check if the diagnosis code No. U1113 is stored in ETACS-ECU.

Q. Is the diagnosis code stored?

Go to Step 4.

Go to Step 5.

STEP 4. Diagnosis code recheck


Check again if the diagnosis code is stored in the CAN box unit.
(1)Erase the diagnosis code.
(2)Turn the electric motor switch from the "OFF" position to the "ON" position.
(3)Check if the diagnosis code is stored.

Q. Is the diagnosis code stored?

Replace the EV remote-ECU.

A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the CAN box unit and the EV remote-ECU. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)

STEP 5. Check whether the diagnosis code is stored again.


Check again if the diagnosis code is stored in the CAN box unit.
(1)Erase the diagnosis code.
(2)Turn the electric motor switch from the "OFF" position to the "ON" position.
(3)Check if diagnosis code is stored.

Q. Is the diagnosis code stored?

Replace the CAN box unit.

A poor connection, open circuit or other intermittent malfunction in the CAN bus line between the CAN box unit and the EV remote-ECU. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction .)