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DTC U1195 Coding not completed
 
 
caution
  • If DTC U1195 is set, diagnose the CAN bus lines.
  • When replacing the ECU, always check that the communication circuit is normal.
 
 
DIAGNOSTIC FUNCTION
When the coding data is not registered, KOS&OSS-ECU sets DTC U1195.
noteWhen KOS&OSS-ECU is new, DTC U1195 is set.
 
 
JUDGMENT CRITERIA
Check Conditions
  • When all the following conditions are met.
    1. Coding is not completed.
    2. For 5 seconds since the start of the reception of ignition status signal (ON or during cranking) transmitted from ETACS-ECU.
Judgment Criterion
  • Any of the coding is not completed normally.
 
 
PROBABLE CAUSES
  • Malfunction of the CAN bus line
  • Variant coding for ETACS-ECU has not been implemented.
  • Malfunction of KOS&OSS-ECU
  • ETACS-ECU malfunction
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line
Use the 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 line (Refer to GROUP 54C - Diagnosis ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), check the other system DTC.
Check again if the DTC is set in the ETACS-ECU.
Is the DTC set?
Diagnose the ETACS-ECU (Refer to GROUP 54A - ETACS - Diagnosis ).
Go to Step 3.
 
STEP 3. DTC recheck
Check again if the DTC is set in the KOS&OSS-ECU.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from "OFF" to "ON."
(3) Check if the DTC is set.
Is the DTC set?
Replace the KOS&OSS-ECU and register the ID codes (Refer to ).
Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to cope with Intermittent Malfunction ).