Code No.B1763:
Column switch abnormality (Lighting switch)
Code No.B1764: Column switch abnormality
(Wiper/washer switch)
COMMENTS ON TROUBLE SYMPTOM
- If the ETACS-ECU receives the lighting switch fail signal, the ETACS-ECU
stores the diagnosis code No. B1763.
- If the ETACS-ECU receives the wiper/washer switch fail signal, the ETACS-ECU stores
the diagnosis code No. B1764.
PROBABLE CAUSES
- Malfunction of the column switch (lighting switch or wiper/washer switch)
- Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check whether the diagnosis code is reset.
| (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 No. B1763 or No. B1764 is reset. |
Q.
Is the diagnosis code reset?
STEP 2. Check whether the diagnosis code is reset.
| (1)Replace the windshield wiper and washer switch. |
| (2)Erase the diagnosis code. |
| (3)Turn the ignition switch from "LOCK" (OFF) position to "ON" position. |
| (4)On completion, check that the diagnosis code No. B1764 is reset. |
Q.
Is the diagnosis code reset?
STEP 3. Check whether the diagnosis code is reset.
| (1)Replace the lighting switch (with built-in column-ECU). |
| (2)Erase the diagnosis code. |
| (3)Turn the ignition switch from "LOCK" (OFF) position to "ON" position. |
| (4)On completion, check that the diagnosis code is reset. |
Q.
Is the diagnosis code reset?
STEP 4. Check whether the diagnosis code is reset.
Q.
Is the diagnosis code reset?
