Code No.B2206 Chassis No. mismatch
caution |
- If diagnosis code No. B2206 is stored, always diagnose the CAN bus line.
- Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
- When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System - How to Register Key ID
.)
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DIAGNOSTIC FUNCTION
If the chassis number which is stored in the ETACS-ECU does not correspond to that which is stored in the engine-ECU, diagnosis code No.B2206 will be stored.
JUDGEMENT CRITERIA
If the chassis number which is stored in the ETACS-ECU does not correspond to that which is stored in the engine-ECU, the ETACS-ECU will determine that the system is defective.
PROBABLE CAUSES
- Chassis number not written
- Malfunction of the ETACS-ECU
- Malfunction of engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. 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 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting
). On completion, go to Step 3.
STEP 2. Check the chassis numbers which have been stored in the engine-ECU.
Check whether the chassis numbers which have been stored in the engine-ECU correspond to the actual chassis number written on the vehicle document.
Q.
Is the check result normal?
Go to Step 3.
Troubleshoot the engine-ECU (Refer to GROUP 13A - Diagnosis Code Chart
<2000, 2400>, GROUP 13B - Troubleshooting
<3000>).
STEP 3. Check whether the diagnosis code is stored again.
Check again if the diagnosis code is stored 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 is stored.
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Q.
Is the diagnosis code stored?
Replace with the coded ETACS-ECU.
The diagnosis is complete.