Code No. U1195 Coding not completed
Code No. U1197 Coding data unavailable



caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be stored. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.
  • When the diagnosis code U1195 or U1197 is stored in ASC-ECU, the diagnosis code may also be stored in ETACS-ECU. When the diagnosis code is stored in ETACS-ECU, carry out the diagnosis of the diagnosis code for ETACS-ECU first.

OPERATION


ASC-ECU receives the vehicle information stored in the ETACS-ECU via CAN bus lines.

DIAGNOSIS CODE SET CONDITIONS


ASC-ECU communicates with ETACS-ECU via CAN bus lines.
This diagnosis code No.U1195 is stored when the variant coding for ETACS-ECU has not been implemented.
This diagnosis code No.U1197 is stored when there is difference between the vehicle information from the ETACS-ECU and the vehicle information stored in the ASC-ECU.

PROBABLE CAUSES


Code No.C1195 is stored
  • Variant coding for ETACS-ECU has not been implemented.
  • ASC-ECU malfunction
Code No.C1197 is stored
  • Malfunction of ETACS-ECU
  • ETACS-ECU have been interchanged between two vehicles.
  • ASC-ECU malfunction
  • External noise interference
  • ASC-ECU have been interchanged between two vehicles.

DIAGNOSIS PROCEDURE


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


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

Q. Is the check result normal?

Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting CAN bus lines


Q. Is diagnosis code No. U1195 or U1197 stored?

Go to Step 3.
The procedure is complete.

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


Use M.U.T.-III to check whether the ETACS-ECU-related or engine ECU-related diagnosis code is stored or not.

Q. Is any diagnosis code stored?

Troubleshoot for the relevant diagnosis code.
Go to Step 4.

STEP 4. Check ETACS coding data


Refer to GROUP 00 - Coding List .

Q. Is the check result normal?

Go to Step 6.
Go to Step 5.

STEP 5. ETACS-ECU variant coding


Perform the variant coding to the ETACS-ECU.

Q. Does variant coding succeed?

Go to Step 7.
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ), and then go to Step 7.

STEP 6. Check part number of ASC-ECU


Check the part number of ASC-ECU.

Q. Is the check result normal?

Go to Step 7.
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). Then go to Step 8.

STEP 7. Check whether the diagnosis code is stored again.


(1)Erase the diagnosis code.
(2)Turn the ignition switch to the "OFF" position.
(3)Turn the ignition switch to the "ON" position.
(4)Turn the ignition switch to the "OFF" position.
(5)Turn the ignition switch to the "ON" position.
(6)Check that the ABS warning lamp goes out.

Q. Is diagnosis code No.U1195 or U1197 stored?

Replace the hydraulic unit (ASC-ECU) (Refer to ). Then go to Step 8.
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).

STEP 8. Check whether the diagnosis code is stored again.


(1)Erase the diagnosis code.
(2)Turn the ignition switch to the "OFF" position.
(3)Turn the ignition switch to the "ON" position.
(4)Turn the ignition switch to the "OFF" position.
(5)Turn the ignition switch to the "ON" position.
(6)Check that the ABS warning lamp goes out.

Q. Is diagnosis code No.U1195 or U1197 stored?

Return to Step 1.
This diagnosis is complete.