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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 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
ASC-ECU communicates with ETACS-ECU via CAN bus lines.
This DTC No.U1195 is set when the variant coding for ETACS-ECU has not been implemented.
This DTC No.U1197 is set when there is difference between the vehicle information from the ETACS-ECU and the vehicle information set in the ASC-ECU.
 
 
 
TROUBLESHOOTING HINTS
DTC C1195 is set
  • Variant coding for ETACS-ECU has not been implemented.
  • ASC-ECU malfunction
DTC C1197 is set
  • 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
STEP 1. Scan tool (M.U.T.-IIISE) CAN bus diagnostics.
(1)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE).
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE) ."
(2) Turn on the power supply mode of the electric motor switch.
(3) Diagnose the CAN bus line.
(4) Turn off the power supply mode of the electric motor switch.
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. DTC recheck after resetting CAN bus lines.
Is DTC No. U1195 or U1197 set?
Go to Step 3.
The procedure is complete.
 
STEP 3. Scan tool (M.U.T.-IIISE) other system DTC.
Use scan tool (M.U.T.-IIISE) to check whether the ETACS-related or engine-related DTC is set or not.
Is any DTC set?
Troubleshoot for the relevant DTC.
Go to Step 4.
 
STEP 4. Check ETACS coding data.
Refer to GROUP 00 - Coding List .
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.
Does variant coding succeed?
Go to Step 7.
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
 
STEP 6. Check part number of ASC-ECU.
Check the part number of ASC-ECU.
Is the check result normal?
Go to Step 7.
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
 
STEP 7. Check whether the DTC is set again.
(1) Erase the DTC.
(2) Turn off the power supply mode of the electric motor switch.
(3) Turn on the power supply mode of the electric motor switch.
(4) Turn off the power supply mode of the electric motor switch.
(5) Turn on the power supply mode of the electric motor switch.
(6) Check that the ABS warning light goes out.
Is DTC No.U1195 or U1197 set?
Replace the hydraulic unit (ASC-ECU) (Refer to ).
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).