Code No.U1534:
Power window main switch checksum error
COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found with the power window main switch, the ETACS-ECU stores the
diagnosis code No.U1534.
PROBABLE CAUSES
Malfunction of the power window main switch
DIAGNOSIS PROCEDURE
Check whether the diagnosis code is reset.
Check again if the diagnosis code is set to the ETACS-ECU.
(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)On completion, check that the diagnosis code is reset.
Q.
Is the check result normal?
A poor connection, open circuit or other intermittent malfunction is present in
the LIN bus lines between the power window main switch and the ETACS-ECU (Refer to GROUP 00,
How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent
Malfunctions ).