CODE NO. L0632 S/R Switch fall
caution | Before replacing the ECU,
ensure that the input and output signal circuits are normal. |



COMMENTS ON TROUBLE SYMPTOM
Current trouble
- If each switch (up, open, close/down) of the sunroof switch has been ON
for 60 seconds, ETACS-ECU sets the diagnosis code No. L0632.
- If diagnosis code No. L0632 is set as past trouble, carry out diagnosis with particular emphasis
on wiring and connector(s) in the CAN bus line. For diagnosis procedures, refer to How to treat
past trouble (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection Service
Points
).
PROBABLE CAUSES
- Malfunction of the sunroof motor assembly
- Malfunction of the sunroof switch
- Damaged wiring harness and connectors
DIAGNOSTIC PROCEDURE
STEP 1. Connector check: D-03 sunroof switch connector and D-04 sunroof motor assembly connector
Q.
Is the check result normal?


STEP 2. Check of the wiring harness between the D-03 sunroof switch connector terminal Nos. 3, 5, 6 and the D-04 sunroof motor assembly connector terminal Nos. 4, 5, 10.
- Check the input/output line for open circuit.
Q.
Is the check result normal?


STEP 3. Diagnosis code recheck
(1)Erase the diagnosis code. |
(2)Turn the ignition switch from the LOCK (OFF) position to the ON position. |
(3)Check if the diagnosis code is set. |
Q.
Is the diagnosis code set?

