If the diagnosis code No. U1415 is set, diagnose the CAN bus lines.
When replacing the ECU, always check that the SRS circuit is normal.
FUNCTION
If the vehicle information data is not registered to the SRS-ECU, the SRS-ECU sets the diagnosis code No. U1415.
TROUBLE JUDGMENT
With the global coding counter value "0," if all the global coding data (vehicle information) are not stored, the SRS-ECU determines that a problem has occurred.
PROBABLE CAUSES
Malfunction of CAN bus line
Malfunction of SRS-ECU
Malfunction of the ETACS-ECU
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. M.U.T.-III other system diagnosis code.
Check if diagnosis code is set to the ETACS-ECU.
Q.
Is the diagnosis code set?
Troubleshoot the ETACS-ECU (Refer to GROUP 54A - ETACS - Troubleshooting ).
Go to Step 3.
STEP 3. Check whether the diagnosis code is reset.
Check again if the diagnosis code is set to the SRS-ECU.
(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)Check if diagnosis code is set.
Q.
Is the diagnosis code set?
Replace the SRS-ECU (Refer to ).
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting 
).