[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > IMMOBILIZER SYSTEM<Vehicles without keyless operation system><Vehicles without keyless operation system> > DIAGNOSIS CODE PROCEDURES > B1A24 Transponder ID not registered
Code No.B1A24 Transponder ID not registered
 
 
caution
  • When diagnosis code No. B1A24 is set, be sure to diagnose the CAN bus line.
  • When replacing the ECU, always check that the communication circuit is normal.
 
 
DIAGNOSIS FUNCTION
The ETACS-ECU sets diagnosis code No. B1A24 when an ignition key ID is not registered in the ETACS-ECU, or the key, which has been registered in another vehicle, is operated.
 
 
JUDGEMENT CRITERIA
The ETACS-ECU sets a diagnosis code when the ignition key ID is not registered in the ETACS-ECU or the key has been registered in another vehicle.
 
 
PROBABLE CAUSES
  • Malfunction of CAN bus line
  • Key ID not registered
  • Key is registered to another vehicle
  • Malfunction of ETACS-ECU
 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics
Use M.U.T.-IIISE to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
 
STEP 2. Register the key.
Register the key ID, which the diagnosis code indicates.
Has the key been registered successfully?
Go to Step 3
Go to Step 4
 
STEP 3. Recheck the diagnosis code.
(1) Clear the diagnosis code.
(2) Remove the ignition key from the cylinder and then insert the ignition key again.
(3) Wait for a few seconds and then turn the ignition "ON".
(4) Check if the diagnosis code is set.
Is the diagnosis code set?
Replace the ETACS-ECU (Refer to ) and register the ID codes (Refer to ).
The diagnosis is complete.
 
STEP 4. Replace the key with a new one, and recheck for the diagnosis code.
Replace the key, which the diagnosis code indicates, with a new one. Register the key ID for the new one. Then recheck for the diagnosis code.
(1) Replace the ignition key, which the diagnosis code indicates, with a new one. Then register it.
(2) Clear the diagnosis code.
(3) Remove the ignition key from the cylinder and then insert the ignition key again.
(4) Wait for a few seconds, and then turn the ignition "ON".
(5) Check if the diagnosis code is set.
Is the diagnosis code set?
Replace the ETACS-ECU (Refer to ) and register the ID codes (Refer to ).
The diagnosis is complete.