Inspection Procedure 2: The ignition key cannot be registered using scan tool (M.U.T.-III): Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Check the ignition key inserted in the key cylinder for interference.
Q: Are there other ignition keys or anything that interferes with the communication (things that generate radio waves such as magnets and an air-cleaning device that has a power plug) near the ignition key inserted in the key cylinder?
1. YES: Move away or remove other ignition keys or things that interfere with the communication (things that generate radio waves such as magnets and a air-cleaning device that has a power plug) near the ignition key. Then, go to Step 2.
2. NO: Go to Step 3.
STEP 2. Retest the system
Check that the ignition key can be registered.

Q: Is the check result normal?
1. YES: The diagnosis is complete.
2. NO: Go to Step 3.
STEP 3. Check which ignition key cannot be registered.
Q: Can any one of the ignition keys be registered?

Only some keys: Replace the key that cannot be registered and register the ID codes (Refer to HOW TO REGISTER KEY ID ). After registering the ID codes, go to Step 5.

All keys: Go to Step 4.
STEP 4. Retest the system
Check the scan tool (M.U.T.-III) screen when the key was not able to be registered.

Q: Which error message did the scan tool (M.U.T.-III) display?

Abnormality in key: Carry out DTC No. B1A25: Transponder ID unmatched, DTC No. B1A35: Transponder read error and DTC No. B2352: Antenna fail (Refer to DTC B1A25: TRANSPONDER ID UNMATCHED < B1A25 >, DTC B1A35: TRANSPONDER READ ERROR < B1A35 >, DTC B2352: ANTENNA FAIL < B2352 >). Then, go to Step 5.

ECU internal error: Replace ETACS-ECU and register the ID codes (Refer to HOW TO REGISTER KEY ID ). After registering the ID codes, go to Step 5.
STEP 5. Retest the system
Check that the ignition key can be registered.

Q: Is the check result normal?
1. YES: The diagnosis is complete.
2. NO: Replace ETACS-ECU and register the ID codes (Refer to HOW TO REGISTER KEY ID ).