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DTC U1195 Coding not completed
DTC U1197 Coding data unavailable
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be set. 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 DTC U1195 or U1197 is set in ASC-ECU, the DTC may also be set in ETACS-ECU. When the DTC is set in ETACS-ECU, carry out the diagnosis of the DTC for ETACS-ECU first.
 
 
OPERATION
ASC-ECU receives the vehicle information stored in the ETACS-ECU via CAN bus lines.
 
 
 
DTC SET CONDITIONS
DTC U1195
  • The ASC-ECU will set the DTC when the variant coding for ETACS-ECU has not been implemented.
DTC U1197
  • The ASC-ECU will set the DTC when there is difference between the vehicle information from the ETACS-ECU and the vehicle information stored in the ASC-ECU.
 
 
 
PROBABLE CAUSES
DTC C1195 is set
  • CAN bus lines are abnormal
  • Variant coding for ETACS-ECU has not been implemented.
  • ETACS-ECU malfunction
  • ASC-ECU malfunction
DTC C1197 is set
  • CAN bus lines are abnormal (External noise interference)
  • Variant coding for ETACS-ECU has not been implemented.
  • The Variant coding data registered in ETACS-ECU is incorrect
  • ETACS-ECU have been interchanged between two vehicles.
  • ASC-ECU malfunction
 
 
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
Use scan tool (M.U.T.-IIISE) to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), check other system DTC.
Use scan tool (M.U.T.-IIISE) to check whether any coding-related DTC B222C is set by ETACS-ECU (Refer to GROUP 54A - ETACS/Diagnostic trouble code chart ).
Is DTC B222C set?
Troubleshoot for the relevant DTC.
Go to Step 3.
 
STEP 3. Check whether the DTC is set again.
(1) Erase the DTC.
(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 light goes out.
Is DTC U1195 or U1197 set?
Replace the hydraulic unit (ASC-ECU) (Refer to ).
This diagnosis is complete.