Code No.U1005 Corner/Back SNS.ECU CAN timeout <Colour liquid crystal display type>


caution
  • If diagnosis code No. U1005 is set, be sure to diagnose the CAN bus line.
  • Before replacing the ECU or combination meter, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

TROUBLE JUDGEMENT


The combination meter sets diagnosis code No.U1005 when it cannot receive signals from the clearance warning control unit.

JUDGEMENT CRITERIA


With the ignition switch is at ON position, diagnosis code No. U1190 is not set and diagnosis code No. U1195 is not set, if the communication with clearance warning control unit cannot be established for 2500 ms or more, the combination meter 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. Check the M.U.T.-III Diagnosis code for other systems


Check that the clearance warning control unit set a diagnosis code.

Q. Is the diagnosis code set?

Diagnose the clearance warning control unit. (Refer to .)

Go to Step 3.

STEP 3. M.U.T.-III other system diagnosis code


Check if a diagnosis code, which relates to CAN communication-linked systems below, is set.

Q. Is the diagnosis code set?

Go to Step 4.

Go to Step 5.

STEP 4. Check whether the diagnosis code is set again.


Recheck if the diagnosis code is set.
(1)Erase the diagnosis code.
(2)Turn the ignition switch to "ON" position.
(3)On completion, check that the diagnosis code is not set again.

Q. Is the diagnosis code set?

Replace the clearance warning control unit, and then go to Step 6.

A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the clearance warning control unit and the combination meter (Refer to GROUP 00 - How to use troubleshooting/Inspection Service Points ).

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


Recheck if the diagnosis code is set.
(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)On completion, check that the diagnosis code is not reset.

Q. Is the diagnosis code set?

Replace combination meter (Refer to ) and then go to Step 6.

A poor connection, open circuit or other intermittent malfunction is present in the CAN bus lines between the clearance warning control unit and the combination meter (Refer to GROUP 00 - How to use troubleshooting/Inspection Service Points ).

STEP 6. Check whether the diagnosis code is set again.


Recheck if the diagnosis code is set.
(1)Erase the diagnosis code.
(2)Turn the ignition switch to "ON" position.
(3)On completion, check that the diagnosis code is set again.

Q. Is the diagnosis code set?

Return to Step 1.

The procedure is complete.