Code No.B1723:
Transponder Communication Failure
COMMENT ON TROUBLE SYMPTOM
This code will be set if the transponder data from the key does not correspond with the
encrypted codes stored in the ETACS-ECU, or the system cannot communicate with the transponder
due to an abnormal communication data (noise or time-out).
PROBABLE CAUSES
- The key has not been registered or defective.
- Malfunction of ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Remove the objects which have a possibility to
interfere with the communication and then check.
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(1)Remove all of the things other than Mitsubishi genuine components (air cleaner
or additional lighting and so on). In addition, move the other ignition key or magnets away
from the vehicle.
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(2)Erase the diagnosis code.
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(3)Turn the ignition switch to "ON" position.
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(4)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
Go to Step 2.
The procedure is complete.
STEP 2. Register the ignition key again and check.
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(1)Register the ignition key again. (Refer to .)
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(2)Erase the diagnosis code.
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(3)Turn the ignition switch to "ON" position.
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(4)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
Go to Step 3.
The procedure is complete.
STEP 3. Check by using the registered ignition key.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch to the ON position by using the other registered ignition
key.
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(3)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
Go to Step 4.
Memorize the diagnosis code and replace the ignition key.
STEP 4. Replace all registered ignition keys and check.
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(1)Replace all registered ignition keys and then register the whole new ignition key
set.
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(2)Erase the diagnosis code.
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(3)Turn the ignition switch to "ON" position.
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(4)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the ETACS-ECU.
The procedure is complete.