Code No.B1763 Lighting switch
Code No.B1764 Wiper switch
TROUBLE JUDGEMENT
The ETACS-ECU receives the signals related to lighting and wiper/washer from the column switch. If the fail information data is included in the signal from column switch, diagnosis code No. B1763 (lighting switch) or B1764 (wiper switch) is set.
COMMENTS ON TROUBLE SYMPTOM
The lighting switch, wiper/washer switch or the ETACS-ECU may have a problem.
PROBABLE CAUSES
- Malfunction of the steering wheel sensor (column switch assembly)
- Malfunction of wiper/washer switch
- Malfunction of lighting switch
- Malfunction of the ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the ETACS-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(3)Check if diagnosis code No. B1763 or B1764 is set.
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Q.
Is the diagnosis code set?
Code No. B1763 is set.
: Go to Step 2.
Code No. B1764 is set. : Go to Step 3.
No diagnosis code is set. : The trouble can be an intermittent malfunction (GROUP 00 - How to Cope with Intermittent Malfunction 
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STEP 2. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the ETACS-ECU.
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(1)Replace the lighting switch (Refer to ).
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(2)Erase the diagnosis code.
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(3)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(4)Check if diagnosis code is set.
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Q.
Is the diagnosis code set?
Go to Step 3.
The diagnosis is complete.
STEP 3. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set in the ETACS-ECU.
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(1)Replace the wiper/washer switch (Refer to ).
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(2)Erase the diagnosis code.
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(3)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
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(4)Check if diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the ETACS-ECU (Refer to ).
The diagnosis is complete.