Code No.B1766: Already learned by other vehicle


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

TROUBLE JUDGEMENT
If the key registered for another vehicle is used to start the engine, the ETACS-ECU sets diagnosis code No.B1766.

PROBABLE CAUSES

  • Ignition key (key ID) is another vehicle’s key
  • Ignition key (key ID) is new key
  • Malfunction of ETACS-ECU

DIAGNOSIS PROCEDURE

STEP 1. All ignition keys registration
Check that the all ignition keys are registered.

Q. Is the check result normal?
Go to Step 2.
Register the all ignition keys. Refer to .

STEP 2. M.U.T.-III CAN bus diagnostics.
Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 3.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ). Repair the CAN bus line.

STEP 3. Check with another key that has already been registered.
Turn the ignition switch to the ON position using another key that has already been registered.

Q. Is the diagnosis code set?
Replace the all ignition keys or by the service key set, and register the ID codes (Refer to ). After registering the ID codes, go to Step 4.
Replace the ignition key that the diagnosis code is set, and register the ID codes again (Refer to ). After registering the ID codes, go to Step 4.

STEP 4. Check whether the diagnosis code is set again.
Check again if the diagnosis code is set.
(1)Turn the ignition switch to the "LOCK" (OFF) position once, and then turn it to the ON position again.
(2)Check that diagnosis code No.B1766 is not set.

Q. Is diagnosis code No.B1766 set?
Replace the ETACS-ECU (Refer to ).
The procedure is complete.