CODE NO. L0637: S/R Position

caution

Before replacing the ECU, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

Current trouble

If the roof lid glass position is out of the specified area, ETACS-ECU sets the diagnosis code No. L0637.

PROBABLE CAUSES

Malfunction of the sunroof motor assembly

DIAGNOSTIC PROCEDURE

STEP 1. Check the sunroof fully closed position

(1)Carry out the learning procedures of the sunroof fully closed position. Refer to

(2)Recheck if the diagnosis code is set.
..... Erase the diagnosis code.
..... Turn the ignition switch from the LOCK (OFF) position to the ON position.
..... Check if the diagnosis code is set.

Q. Is the check result normal?

	The diagnosis is complete.

	Go to Step 2.

STEP 2. Diagnosis code recheck

Recheck if the diagnosis code is set.

(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?

	Replace the sunroof motor assembly.

	The diagnosis is complete.