L0746

CODE NO. L0746: P/W (DR) Parameter read fail

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

COMMENTS ON TROUBLE SYMPTOM
- If the power window main switch information signals cannot be read, power window main switch sets the diagnostic trouble code No. L0746.
- If the driver's door window glass position cannot be read, power window main switch sets the diagnostic trouble code No. L0750.

PROBABLE CAUSES
- Malfunction of the power window main switch

DIAGNOSTIC PROCEDURE

Diagnostic trouble code recheck
Recheck if the diagnostic trouble code is set.
1. Erase the diagnostic trouble code.
2. Turn the ignition switch from the LOCK (OFF) position to the ON position.
3. Check if the diagnostic trouble code is set.

Q: Is the diagnostic trouble code set?

YES: Replace the power window main switch.

NO: The procedure is complete. Verify that the power window works normally.