[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
42 -BODY > 42B-KEYLESS OPERATION SYSTEM (KOS) > TROUBLESHOOTING > SYMPTOM PROCEDURES > KEYLESS OPERATION KEY CANNOT BE REGISTERED WITH M.U.T.-III
Inspection Procedure 2: The keyless operation key cannot be registered using the M.U.T.-IIISE.
 
 
caution
  • Keyless operation key cannot be registered to another vehicle.
  • Only the keyless operation key for ECLIPSE CROSS can be registered as a key.
  • If commercial electric products are connected, communication with the keyless operation key cannot be performed normally, and the key registration may fail. When performing the registration, disconnect all the commercial electric products.
  • Before replacing the ECU, ensure that the communication circuit is normal.
 
 
COMMENTS ON TROUBLE SYMPTOM
If only some keyless operation keys cannot be registered, the keyless operation key itself may be faulty. If no keyless operation key can be registered, the key assembly may have already been registered for another vehicle, or the KOS&OSS-ECU may be faulty.
 
 
PROBABLE CAUSES
  • Keyless operation key is registered to another vehicle
  • The keyless operation key not for ECLIPSE CROSS
  • The keyless operation key does not touch the engine switch correctly, or metal objects or other keys are near the keyless operation key.
  • When registering the keyless operation key, commercial electric products are connected or there is something that interferes with the communication.
  • Malfunction of the keyless operation key
  • Malfunction of KOS&OSS-ECU
 
 
DIAGNOSIS PROCEDURE
STEP 1. Let the keyless operation key touch the engine switch , and identify a trouble phenomenon according to the method of operation.
Method of operation
 
Is the check result normal?
The procedure is complete.
Go to Step 2.
 
STEP 2. Confirmation of interference while the engine switch is being touched with the keyless operation key.
Check if there is another keyless operation key nearby or anything that interferes with the communication (magnets or objects that generate radio waves such as air-cleaning devices with a power plug).
Are there other keys or anything that interferes with the communication?
Move away or remove other keyless operation keys or anything that interferes with the communication. Then, go to Step 3.
Go to Step 4.
 
STEP 3. Retest the system
Check that the keyless operation key can be registered.
Is the check result normal?
The procedure is complete.
Go to Step 4.
 
STEP 4. M.U.T.-IIISE diagnosis code
Check if any diagnosis code is set in the KOS&OSS-ECU.
Is the diagnosis code set?
Perform troubleshooting for the KOS&OSS-ECU (Refer to ).
Go to Step 5.
 
STEP 5. Check which keyless operation key cannot be registered.
Can any one of the keyless operation keys be registered?
YES (Only some keys) : Replace the key that cannot be registered and register the ID codes (Refer to ). After registering the ID codes, go to Step 7.
NO (All keys) : Go to Step 6.
 
STEP 6. Retest the system
Check the M.U.T.-IIISE screen when the key was not able to be registered.
Does the error message on the M.U.T.-IIISE screen indicate that the key is defective?
YES (Abnormality in key) : Carry out diagnosis code B1A25: Transponder ID unmatched (Refer to ). Then, go to Step 7.
NO (ECU internal error) : Replace KOS&OSS-ECU and register the ID codes (Refer to ).
 
STEP 7. Retest the system
Check that the keyless operation key can be registered.
Is the check result normal?
The procedure is complete.
Go to Step 8.
 
STEP 8. Check whether the diagnosis code is set again.
(1) Turn the power supply mode of the engine switch from "OFF" to "ON".
(2) Check if the diagnosis code is set.
Is the diagnosis code set?
Replace KOS&OSS-ECU and register the ID codes (Refer to ).
The procedure is complete.